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== Ecology ==
== Ecology ==
Brassicaceae are almost exclusively [[Entomophily|pollinated by insects]] or eventually [[selfing]]. Two notable exceptions are exclusive [[Cleistogamy|self pollination in closed flowers]] in ''[[Cardamine chenopodifolia]]'', and wind polination in ''[[Pringlea|Pringlea antiscorbutica]]''.<ref name=BioDis /> Most species reproduce sexually through seed, but ''[[Cardamine bulbifera]]'' produces [[Gemma (botany)|gemmae]] and in others such as ''[[Cardamine pentaphyllos]]'' the coral-like roots easily break in segments, that will grow into separate plants.<ref name=BioDis /> Some species, such as in the genus ''[[Cardamine]]'', open with force and so catapult the seeds quite far. Brassicaceae are common on [[serpentine]] and [[dolomite]] rich in [[magnesium]]. Over a hundred species in the family accumulatie [[heavy metals]], particularly [[zinc]] and [[nickel]], which is a record percentage.<ref name=MOBOT>{{cite web|website= MOBOT|title= Brassicales|url= http://www.mobot.org/MOBOT/research/APweb/orders/brassicalesweb.htm#Brassicaceae|accessdate= 2017-07-18}}</ref> Several ''Alyssum'' species can accumulate nickle up to 0.3% of their dry weight, and may be useful in soil remediation or even bio-mining.<ref>{{cite journal|first1= Catherine L.|last1= Broadhurst|first2= Rufus L.|last2= Chaney|year= 2016|title= Growth and Metal Accumulation of an Alyssum murale Nickel Hyperaccumulator Ecotype Co-cropped with Alyssum montanum and Perennial Ryegrass in Serpentine Soil|journal= [[Frontiers in Plant Science]]|volume= 7|issue= 451|url= https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4824781/|accessdate= 2017-07-21}}</ref><ref>{{cite journal|first= R.D.|last= Schuiling|year= 2013|title= Farming nickel from non-ore deposits, combined with CO<sub>2</sub> sequestration|journal= [[Natural Science|volume= 5|issue= 4|pages= 445–448|url= http://file.scirp.org/pdf/NS_2013041713114070.pdf|accessdate= 2017-07-21}}</ref>
Brassicaceae are almost exclusively [[Entomophily|pollinated by insects]] or eventually [[selfing]]. Two notable exceptions are exclusive [[Cleistogamy|self pollination in closed flowers]] in ''[[Cardamine chenopodifolia]]'', and wind polination in ''[[Pringlea|Pringlea antiscorbutica]]''.<ref name=BioDis /> Most species reproduce sexually through seed, but ''[[Cardamine bulbifera]]'' produces [[Gemma (botany)|gemmae]] and in others such as ''[[Cardamine pentaphyllos]]'' the coral-like roots easily break in segments, that will grow into separate plants.<ref name=BioDis /> Some species, such as in the genus ''[[Cardamine]]'', open with force and so catapult the seeds quite far. Brassicaceae are common on [[serpentine]] and [[dolomite]] rich in [[magnesium]]. Over a hundred species in the family accumulatie [[heavy metals]], particularly [[zinc]] and [[nickel]], which is a record percentage.<ref name=MOBOT>{{cite web|website= MOBOT|title= Brassicales|url= http://www.mobot.org/MOBOT/research/APweb/orders/brassicalesweb.htm#Brassicaceae|accessdate= 2017-07-18}}</ref> Several ''Alyssum'' species can accumulate nickle up to 0.3% of their dry weight, and may be useful in soil remediation or even bio-mining.<ref>{{cite journal|first1= Catherine L.|last1= Broadhurst|first2= Rufus L.|last2= Chaney|year= 2016|title= Growth and Metal Accumulation of an Alyssum murale Nickel Hyperaccumulator Ecotype Co-cropped with Alyssum montanum and Perennial Ryegrass in Serpentine Soil|journal= [[Frontiers in Plant Science]]|volume= 7|issue= 451|url= https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4824781/|accessdate= 2017-07-21}}</ref><ref>{{cite journal|first= R.D.|last= Schuiling|year= 2013|title= Farming nickel from non-ore deposits, combined with CO<sub>2</sub> sequestration|journal= [[Natural Science]]|volume= 5|issue= 4|pages= 445–448|url= http://file.scirp.org/pdf/NS_2013041713114070.pdf|accessdate= 2017-07-21}}</ref>


Brassicaceae contain [[glucosinolate]]s as well as [[myrosinase]]s inside their cells. When the cell is damaged, the myrosinases [[Hydrolysis|hydrolises]] the glucosinolates, leading to the synthesis of [[isothiocyanate]]s, which are compounds toxic to most animals, fungi and bacteria. Some insect herbivores have developed counter adaptations such as rapid absorbtion of the glucosinates, quick alternative breakdown into non-toxic compounds and avoiding cell damage. Differences between the mixtures of glucosinolates between species and even within species is large, and individual plants may produce in excess of fifty individual substances. The energy penalty for synthesising all these glucosinolates may be as high as 15% of the total needed to produce a leaf. ''[[Bittercress]]'' (''Barbarea vulgaris'') also produces [[triterpenoid saponin]]s. These adaptations and counter adaptations probably have led to extensive diversification in both the Brassicaceae and one of its major pests, the butterfly family [[Pieridae]]. A particular cocktail of volatile glucosinates triggers egg-laying in many species. Thus a particular crop can sometimes be protected by planting bittercress as a deadly bait, for the saponins kill the caterpillars, but the butterfly is still lured by the bittercress to lay its egg on the leaves.<ref>{{cite journal|last1= Winde|first1= I|last2= Wittstock|first2= U.|title= Insect herbivore counteradaptations to the plant glucosinolate-myrosinase system|year= 2011|journal= Phytochemistry|volume= 72|issue= 13|pages= 1566-75|url= https://www.ncbi.nlm.nih.gov/pubmed/21316065|accessdate= 2017-07-17}}</ref>
Brassicaceae contain [[glucosinolate]]s as well as [[myrosinase]]s inside their cells. When the cell is damaged, the myrosinases [[Hydrolysis|hydrolises]] the glucosinolates, leading to the synthesis of [[isothiocyanate]]s, which are compounds toxic to most animals, fungi and bacteria. Some insect herbivores have developed counter adaptations such as rapid absorbtion of the glucosinates, quick alternative breakdown into non-toxic compounds and avoiding cell damage. Differences between the mixtures of glucosinolates between species and even within species is large, and individual plants may produce in excess of fifty individual substances. The energy penalty for synthesising all these glucosinolates may be as high as 15% of the total needed to produce a leaf. ''[[Bittercress]]'' (''Barbarea vulgaris'') also produces [[triterpenoid saponin]]s. These adaptations and counter adaptations probably have led to extensive diversification in both the Brassicaceae and one of its major pests, the butterfly family [[Pieridae]]. A particular cocktail of volatile glucosinates triggers egg-laying in many species. Thus a particular crop can sometimes be protected by planting bittercress as a deadly bait, for the saponins kill the caterpillars, but the butterfly is still lured by the bittercress to lay its egg on the leaves.<ref>{{cite journal|last1= Winde|first1= I|last2= Wittstock|first2= U.|title= Insect herbivore counteradaptations to the plant glucosinolate-myrosinase system|year= 2011|journal= Phytochemistry|volume= 72|issue= 13|pages= 1566-75|url= https://www.ncbi.nlm.nih.gov/pubmed/21316065|accessdate= 2017-07-17}}</ref>

Revision as of 11:45, 21 July 2017

Brassicaceae
Winter cress, Barbarea vulgaris
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Brassicales
Family: Brassicaceae
Burnett[1]
Genera

See text

Brassicaceae or Cruciferae is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, some shrubs, with simple, although sometimes deeply incised, alternatingly set leaves without stipules or in leaf rosettes, with terminal inflorescences without bracts, containing flowers with four free sepals, four free alternating petals, two short and four longer free stamens, and a fruit with seeds in rows, devided by a thin wall (or septum).

The family contains 372 genera and 4060 accepted species.[2] The largest genera are Draba (440 species), Erysimum (261 species), Lepidium (234 species), Cardamine (233 species), and Alyssum (207 species).

The family contains the cruciferous vegetables, including species such as Brassica oleracea (e.g., broccoli, cabbage, cauliflower, kale, collards), Brassica rapa (turnip, Chinese cabbage, etc.), Brassica napus (rapeseed, etc.), Raphanus sativus (common radish), Armoracia rusticana (horseradish), Matthiola (stock) and the model organism Arabidopsis thaliana (thale cress).

Pieris rapae and other butterflies of the family Pieridae are some of the best-known pests of Brassicaceae species planted as commercial crops.

Taxonomy

Carl Linnaeus in 1753 regarded the Brassicaceae as a natural group naming them "Klass" Tetradynamia. Alfred Barton Rendle placed the family in the order Rhoedales, while George Bentham and Joseph Dalton Hooker in their system published from 1862–1883, assigned it to their cohort Parietales (now the class Violales). Following Bentham and Hooker, John Hutchinson in 1948 and again in 1964 thought the Brassicaceae to stem from near the Papaveraceae. In 1994, a group of scientists including Walter Stephen Judd suggested to include the Capparaceae in the Brassicaceae. Early DNA-analysis showed that the Capparaceae - as defined at that moment - were paraphyletic, and it was suggested to assign the genera closest to the Brassicaceae to the Cleomaceae.[3] The Cleomaceae and Brassicaceae diverged approximately 41 million years ago.[4] All three families have consistently been placed in one order (variably called Capparales or Brassicales).[3] The APG II system, merged Cleomaceae and Brassicaceae. Other classifications have continued to recognize the Capparaceae, but with a more restricted circumscription, either including Cleome and its relatives in the Brassicaceae or recognizing them in the segregate family Cleomaceae. The APG III system has recently adopted this last solution, but this may change as a consensus arises on this point. Current insights in the relationships of the Brassicaceae, based on a 2012 DNA-analysis, are summarized in the following tree.[5][6]

core Brassicales

family Tovariaceae

family Capparaceae

family Cleomaceae

family Brassicaceae

family Emblingiaceae

Relationships within the family

Early classifications depended on morphological comparison only, but because of extensive convergent evolution, these do not provide a reliable phylogeny. Although a substantial effort was made through molecular phylogenetic studies, the relationships within the Brassicaceae have not always been well resolved yet. It has long been clear that the Aethionemae are sister of the remainder of the family.[7] One analysis from 2014 represented the relation between 39 tribes with the following tree.[8]

Brassicaceae

Aethionemae

Megacarpaeeae

Heliophileae

Coluteocarpeae

Conringieae

Buniadeae

Kernereae

Schizopetaleae

Thlaspideae

Isatieae

Sisymbrieae

Brassiceae

Thelypodieae

Eutremeae

Calepineae

Biscutelleae

Arabideae

Cochlearieae

Anchonieae

Hesperideae

Anastaticeae

Dontostemoneae

Chorisporeae

Euclidieae

Iberideae

Erysimeae

Lepidieae

Smelowskieae

Yinshanieae

Descurainieae

Camelinieae

Boechereae

Oreophytoneae

Halimolobeae

Physarieae

Crucihimalayeae

Cardamineae

Alysseae

Etymology and pronunciation

The name "Brassicaceae" (English: /ˌbræsɪˈkeɪsi, -siˌaɪ, -siˌeɪ, -siˌi/) comes to international scientific vocabulary from New Latin, from Brassica, the type genus, + -aceae,[9] a standardized suffix for plant family names in modern taxonomy. The genus name comes from the Classical Latin word brassica, referring to cabbage and other cruciferous vegetables. The alternative older name, Cruciferae (English: /kruːˈsɪfəri/), meaning "cross-bearing", describes the four petals of mustard flowers, which resemble a cross. Cruciferae is one of eight plant family names without the suffix -aceae that are authorized alternative names (according to ICBN Art. 18.5 and 18.6 Vienna Code).

Description

Species belonging to the Brassicaceae are mostly annual, biennial, or perennial herbaceous plants, some are dwarf shrubs or shrubs, and very few vines. Although generally terrestrial, a few species such as water awlwort live submerged in fresh water. They may have a taproots or a sometimes woody caudex that may have few or many branches, same have thin or tuberous rhizomes, or rarely develop runners. Few species have multi-cellular glands. Hairs consist of one cell and occur in many forms: from simple to forked, star-, tree- or T-shaped, rarely taking the form of a shield or scale. They are never topped by a gland. The stems may be upright, rise up towards the tip, or lie flat, are mostly herbaceous but sometimes woody. Stems carry leafs or the stems may be leafless, and some species lack stems altogether. The leaves do not have stipules, but there may be a pair of glands at base of leafstalks and flowerstalks. The leaf may be seated or have a leafstalk. The leaf blade is usually simple, entire or dissected, rarely trifoliolate or pinnately compound. A leaf rosette at the base may be present or absent. The leaves along the stem are almost always alternately arranged, rarely apparently opposite.[10] The genome size of Brassicaceae compared to that of other Angiosperm families is very small to small (less than 3.425 million base pairs per cell), varying from 150 Mbp in Arabidopsis thaliana and Sphaerocardamum spp., to 2375 Mbp Bunias orientalis. The number of homologous chromosome sets varies from four (n=4) in some Physaria and Stenopetalum species, five (n=5) in other Physaria and Stenopetalum species, Arabidopsis thaliana and a Mathiola species, to seventeen (n=17). About 35% of the species in which chromosomes have been counted have eight sets (n=8). Due to polyploidy, some species may have up to 256 individual chromosomes, with some very high counts in the North-American species of Cardamine, such as C. diphylla. Hybridisation is not unusual in Brassicaceae, especially in Arabis, Rorippa, Cardamine and Boechera. Hybridisation between species originating in Africa and California, and subsequent polyploidisation is surmised for Lepidium species native to Australia and New Zealand.[4]

Inflorescence and flower

Typical floral diagram of a Brassicaceae (Erysimum "Bowles' Mauve")

Flowers may be arranged in racemes, panicles, or corymbs, with pedicels sometimes in the axil of a bract, and few species have flowers that sit individually on flower stems that spring from the axils of rosette leaves. The orientation of the pedicels when fruits are ripe varies dependend on the species. The flowers are bisexual, star symmetrical (zygomorphic in Iberis and Teesdalia) and the ovary positioned above the other floral parts. Each flower has four free or seldomly merged sepals, the lateral two sometimes with a shallow spur, which are mostly shed after flowering, rarely persistent, may be reflexed, spreading, ascending, or erect, together forming a tube-, bell- or urn-shaped calyx. Each flower has four petals, set alternating with the sepals, although in some species these are rudimentary or absent. They may be differentiated into a blade and a claw or not, and consistently lack basal appendages. The blade is entire or has an indent at the tip, and may sometimes be much smaller than the claws. The mostly six stamens are set in two whorls: usually the two lateral, outer ones are shorter than the four inner stamens, but very rarely the stamens can all have the same length, and very rarely species have different numbers of stamens such as sixteen to twenty four in Megacarpaea, four in Cardamine hirsuta, and two in Coronopus. The filaments are slender and not fused, while the anthers consist of two pollen producing cavities, and open with longitudinal slits. The pollen grains are tricolpate. The receptacle carries a variable number of nectaries, but these are always present opposite the base of the lateral stamens.[10][5]

Ovary, fruit and seed

There is one superior pistil that consists of two carpels that may either sit directly above the base of the stamens or on a stalk. It initially consists of only one cavity but during its further development a thin wall grows that divides the cavity, both placentas and separates the two valves (a so-called false septum). Rarely, there is only one cavity without a septum. The 2–600 ovules are usually along the side margin of the carpels, or rarely at the top. Fruits are capsules that open with two valves, usually towards the top. These are called silique if at least three times longer than wide, or silicle if the length is less than three times the width. The fruit is very variable in its other traits. There may be one persistent style that connects the ovary to the globular or conical stigma, which is undivided or has two spreading or connivent lobes. The variously shaped seeds are usually yellow or brown in color, and arranged in one or two rows in each cavety. The seed leaves are entire or have a notch at the tip. The seed does not contain endosperm.[10]

Differences with similar families

Brassicaceae have a bisymmetical corolla (left is mirrored by right, stem-side by out-side, but each quarter is not symetrical), a septum dividing the fruit, lack stipules and have simple (although sometimes deeply incised) leaves. The sister family Cleomaceae has bilateral symmetrical corollas (left is mirrored by right, but stem-side is different from out-side), no septum, stipules or palmately divided leaves.[10] Capparaceae generally have a gynophore, sometimes an androgynophore, and a variable number of stamens.[5]

Distribution

Brassicaceae can be found almost on the entire land surface of the planet, but it is absent from Antarctica, and in some areas in the tropics i.e. north-eastern Brazil, the Congo basin, Maritime Southeast Asia and tropical Australasia. The area of origin of the family is possibly the Irano-Turanian Region, where approximately 900 species occur in 150 different genera. About 530 are endemics. Next in abundance comes the Mediterranean Region with around 630 species (290 of which are endemic) in 113 genera. The family is less prominent in the Saharo-Arabian Region - 65 genera, 180 species of which 62 endemic - and North-America (comprising the North American Atlantic Region and the Rocky Mountain Floristic Region) - 99 genera, 780 species of which 600 endemic -. South-America has 40 genera containing 340 native species, Southern Africa 15 genera with over 100 species and Australia and New-Zealand have 19 genera with 114 species between them.[4]

Ecology

Brassicaceae are almost exclusively pollinated by insects or eventually selfing. Two notable exceptions are exclusive self pollination in closed flowers in Cardamine chenopodifolia, and wind polination in Pringlea antiscorbutica.[5] Most species reproduce sexually through seed, but Cardamine bulbifera produces gemmae and in others such as Cardamine pentaphyllos the coral-like roots easily break in segments, that will grow into separate plants.[5] Some species, such as in the genus Cardamine, open with force and so catapult the seeds quite far. Brassicaceae are common on serpentine and dolomite rich in magnesium. Over a hundred species in the family accumulatie heavy metals, particularly zinc and nickel, which is a record percentage.[11] Several Alyssum species can accumulate nickle up to 0.3% of their dry weight, and may be useful in soil remediation or even bio-mining.[12][13]

Brassicaceae contain glucosinolates as well as myrosinases inside their cells. When the cell is damaged, the myrosinases hydrolises the glucosinolates, leading to the synthesis of isothiocyanates, which are compounds toxic to most animals, fungi and bacteria. Some insect herbivores have developed counter adaptations such as rapid absorbtion of the glucosinates, quick alternative breakdown into non-toxic compounds and avoiding cell damage. Differences between the mixtures of glucosinolates between species and even within species is large, and individual plants may produce in excess of fifty individual substances. The energy penalty for synthesising all these glucosinolates may be as high as 15% of the total needed to produce a leaf. Bittercress (Barbarea vulgaris) also produces triterpenoid saponins. These adaptations and counter adaptations probably have led to extensive diversification in both the Brassicaceae and one of its major pests, the butterfly family Pieridae. A particular cocktail of volatile glucosinates triggers egg-laying in many species. Thus a particular crop can sometimes be protected by planting bittercress as a deadly bait, for the saponins kill the caterpillars, but the butterfly is still lured by the bittercress to lay its egg on the leaves.[14] A moth that feeds on a range of Brassicaceae is the diamondback moth (Plutella xylostella). Like the Pieridae, it is capable of converting isothiocyanates into less problematic nitriles. Managing this pest in crops became more complicated after resistance developed against a toxin produced by Bacillus thuringiensis, which is used as a Brad spectrum biological plant protection against caterpillars. Parasitoid wasps that feed on such insect herbivores are attracted to the chemical compounds released by the plants, and thus are able to locate their prey. The cabbage aphid (Brevicoryne brassicae) stores glucosinolates and synthesises its own myrosinases, which may deter its potential predators.[11]

Uses

Lunaria annua with dry walls of the fruit
Smelowskia americana is endemic to the midlatitude mountains of western North America.

This family includes important agricultural crops, among which many vegetables such as cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, savoy, kohlrabi, and gai lan (Brassica oleracea), turnip, napa cabbage, bomdong, bok choy and cime di rapa (Brassica rapa), rocket salad (Eruca sativa), garden cress (Lepidium sativum), watercress (Nasturtium officinale) and radish (Raphanus) and a few spices like horseradish (Armoracia rusticana), Brassica, wasabi (Eutrema japonicum), white, indian and black mustard (Sinapis alba, Brassica juncea and B. nigra respectively). Vegetable oils is produced from the seeds of several species such as Brassica napus (rapeseed oil), perhaps providing the largest volume of vegetable oils of any species. The small Eurasian weed Arabidopsis thaliana is widely used as model organism in molecular biology. The Brassicaceae also includes ornamentals, such as species of Aethionema, Alyssum, Arabis, Aubrieta, Aurinia, Erysimum, Hesperis, Iberis, Lobularia, Lunaria, Malcolmia, and Matthiola.[4] Honesty (Lunaria annua) is cultivated for the decorative value of the translucent remains of the fruits after drying. Woad (Isatis tinctoria) was used in the past to produce a blue textile dye (indigo), but has largely been replaced by the same substance from unrelated tropical species like Indigofera tinctoria. Arabidopsis thaliana is a very important model organism in the study of the flowering plants (Angiospermae).

Main article: Cruciferous vegetables

Genera

See also

References

  1. ^ Angiosperm Phylogeny Group (2009). "An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG III" (PDF). Botanical Journal of the Linnean Society. 161 (2): 105–121. doi:10.1111/j.1095-8339.2009.00996.x. Retrieved 2013-07-06.
  2. ^ "Brassicaceae". The Plant List.
  3. ^ a b Hall, J.C.; Sytsma, K.J.; Iltis, H.H. (2002). "Phylogeny of Capparaceae and Brassicaceae based on chloroplast sequence data". American Journal of Botany. 89 (11): 1826–1842. doi:10.3732/ajb.89.11.1826. PMID 21665611.
  4. ^ a b c d Genetics and Genomics of the Brassicaceae. Plant Genetics and Genomics: Crops and Models. Vol. 9. Springer Science & Business Media. 2010. {{cite book}}: Unknown parameter |editors= ignored (|editor= suggested) (help)
  5. ^ a b c d e "Brassicaceae: Characters, Distribution and Types (With Diagram)". biologydiscussion. Retrieved 2017-07-12.
  6. ^ Su, Jun-Xia; Wang, Wei; Zhang, Li-Bing; Chen, Zhi-Duan (June 2012). "Phylogenetic placement of two enigmatic genera, Borthwickia and Stixis, based on molecular and pollen data, and the description of a new family of Brassicales, Borthwickiaceae" (PDF). Taxon. 61 (3): 601–611.
  7. ^ Al-Shehbaz, Ihsan A. (2012). "A generic and tribal synopsis of the Brassicaceae (Cruciferae)". Taxon. 61 (5): 931–954. {{cite journal}}: |access-date= requires |url= (help)
  8. ^ Edger, Patrick P.; Tang, Michelle; Bird, Kevin A.; Mayfield, Dustin R.; Conant, Gavin; Mummenhoff, Klaus; Koch, Marcus A.; Pires, J. Chris (2014). "Secondary Structure Analyses of the Nuclear rRNA Internal Transcribed Spacers and Assessment of Its Phylogenetic Utility across the Brassicaceae (Mustards)". PLOS ONE. Retrieved 2017-07-11.
  9. ^ Merriam-Webster, Merriam-Webster's Unabridged Dictionary, Merriam-Webster.
  10. ^ a b c d Al-Shehbaz, I.A (2012). "Neotropical Brassicaceae". Neotropikey - Interactive key and information resources for flowering plants of the Neotropics. Retrieved 2017-07-12.
  11. ^ a b "Brassicales". MOBOT. Retrieved 2017-07-18.
  12. ^ Broadhurst, Catherine L.; Chaney, Rufus L. (2016). "Growth and Metal Accumulation of an Alyssum murale Nickel Hyperaccumulator Ecotype Co-cropped with Alyssum montanum and Perennial Ryegrass in Serpentine Soil". Frontiers in Plant Science. 7 (451). Retrieved 2017-07-21.
  13. ^ Schuiling, R.D. (2013). "Farming nickel from non-ore deposits, combined with CO2 sequestration" (PDF). Natural Science. 5 (4): 445–448. Retrieved 2017-07-21.
  14. ^ Winde, I; Wittstock, U. (2011). "Insect herbivore counteradaptations to the plant glucosinolate-myrosinase system". Phytochemistry. 72 (13): 1566–75. Retrieved 2017-07-17.

Further reading

  • Carlquist, Sherwin (1971). "Wood anatomy of Macaronesian and other Brassicaceae" (PDF). Aliso. 7 (3): 365–84.
  • Walter S. Judd; Christopher S. Campbell; Elizabeth A. Kellogg; Peter F. Stevens; Michael J. Donoghue, eds. (2008). Plant Systematics: A Phylogenetic Approach. Sinauer Associates. ISBN 978-0-87893-407-2.
  • Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 7, May 2006 [and more or less continuously updated since]. [1]
  • Strasburger, Noll, Schenck, Schimper: Lehrbuch der Botanik für Hochschulen. 4. Auflage, Gustav Fischer, Jena 1900, p. 459
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