Chromosomal Evolution and Apomixis in the Cruciferous Tribe Boechereae

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F20%3A00117309" target="_blank" >RIV/00216224:14740/20:00117309 - isvavai.cz</a>

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fpls.2020.00514/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fpls.2020.00514/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fpls.2020.00514" target="_blank" >10.3389/fpls.2020.00514</a>

Result language

angličtina

Original language name

Chromosomal Evolution and Apomixis in the Cruciferous Tribe Boechereae

Original language description

The mustard family (Brassicaceae) comprises several dozen monophyletic clades usually ranked as tribes. The tribe Boechereae plays a prominent role in plant research due to the incidence of apomixis and its close relationship toArabidopsis. This tribe, largely confined to western North America, harbors nine genera and c. 130 species, with &gt;90% of species belonging to the genusBoechera. Hundreds of apomictic diploid and triploidBoecherahybrids have spurred interest in this genus, but the remaining Boechereae genomes remain virtually unstudied. Here we report on comparative genome structure of six genera (Borodinia,Cusickiella,Phoenicaulis,Polyctenium,Nevada, andSandbergia) and threeBoecheraspecies as revealed by comparative chromosome painting (CCP). All analyzed taxa shared the same seven-chromosome genome structure. Comparisons with the sister Halimolobeae tribe (n= 8) showed that the ancestral Boechereae genome (n= 7) was derived from an oldern= 8 genome by descending dysploidy followed by the divergence of extant Boechereae taxa. As tribal divergence post-dated the origin of four tribe-specific chromosomes, it is proposed that these chromosomal rearrangements were a key evolutionary innovation underlaying the origin and diversification of the Boechereae in North America. Although most Boechereae genera exhibit genomic conservatism, intra-tribal cladogenesis has occasionally been accompanied by chromosomal rearrangements (particularly inversions). Recently, apomixis was reported in the Boechereae generaBorodiniaandPhoenicaulis. Here, we report sexual reproduction in diploidNevada, diploidSandbergia, and tetraploidCusickiellaand aposporous apomixis in tetraploids ofPolycteniumandSandbergia. In sum, apomixis is now known to occur in five of the nine Boechereae genera.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Frontiers in Plant Science

ISSN

1664-462X

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

MAY

Country of publishing house

CH - SWITZERLAND

Number of pages

17

Pages from-to

514

UT code for WoS article

000541575900001

EID of the result in the Scopus database

2-s2.0-85086357025