A century of B chromosomes in plantsSo what?

Standard

A century of B chromosomes in plants : So what? / Houben, Andreas; Jones, R. Neil; Viegas, W.

In: Annals of Botany, Vol. 101, No. 6, 01.04.2008, p. 767-775.

Research output: Contribution to journalArticlepeer-review

Harvard

Houben, A, Jones, RN & Viegas, W 2008, 'A century of B chromosomes in plants: So what?', Annals of Botany, vol. 101, no. 6, pp. 767-775. https://doi.org/10.1093/aob/mcm167

APA

Houben, A., Jones, R. N., & Viegas, W. (2008). A century of B chromosomes in plants: So what? Annals of Botany, 101(6), 767-775. https://doi.org/10.1093/aob/mcm167

Vancouver

Houben A, Jones RN, Viegas W. A century of B chromosomes in plants: So what? Annals of Botany. 2008 Apr 1;101(6):767-775. https://doi.org/10.1093/aob/mcm167

Author

Houben, Andreas ; Jones, R. Neil ; Viegas, W. / A century of B chromosomes in plants : So what?. In: Annals of Botany. 2008 ; Vol. 101, No. 6. pp. 767-775.

Bibtex - Download

@article{b0b8e301aa24428492359917af74fd42,
title = "A century of B chromosomes in plants: So what?",
abstract = "Background: Supernumerary B chromosomes (Bs) are a major source of intraspecific variation in nuclear DNA amounts in numerous species of plants. They favour large genomes, and create polymorphisms for DNA variation in natural populations. By studying Bs we can gain useful knowledge about the organization, function and evolution of genomes. There are also significant biological questions concerning the origin and structural organization of Bs, and the way in which these selfish elements can establish themselves by exploiting the replicative machinery of their host genome nucleus. Scope: It is a sine qua non that Bs originate from the A chromosomes, in a variety of ways. We can study their modes of drive and ask how it is that chromosomes which apparently lack genes can have control over their own drive process which leads to their survival in natural populations. Molecular cytogenetic studies are opening up new avenues of investigation. Population equilibria for B frequencies are determined by a balance between accumulation and harmful effects. Bs are also subject to meiotic loss due to polysomy and to elimination at meiosis as univalents. These balancing forces can be seen in the context of host/parasite interaction, based on a dissection of the genetic elements in both As and Bs (in maize) which interact to bring about a stable equilibrium, at least for a snapshot in time. Conclusions: Aside from their intrinsic enigmatic properties, B chromosomes make useful experimental tools to study genome organization. Thus far they have not been exploited for their applications, other than through the use of A-B translocations used for gene mapping in maize; but there are opportunities to use them to modulate the frequency and distribution of recombination, to diploidize allopolyploids, to study centromeres and to be developed as plant artificial chromosomes; given that they can be structurally modified and their inheritance stabilized.",
keywords = "B chromosomes, DNA polymorphisms, host-parasite interaction, mitotic/meiotic drive, applications, genome organization/evolution, centromeres",
author = "Andreas Houben and Jones, {R. Neil} and W. Viegas",
note = "Jones, R. N., Viegas, W., Houben, A. (2008). A century of b chromosomes in plants: so what?  Annals of Botany, 101, (6), pp. 767-775 IMPF: 02.75",
year = "2008",
month = apr,
day = "1",
doi = "10.1093/aob/mcm167",
language = "English",
volume = "101",
pages = "767--775",
journal = "Annals of Botany",
issn = "0305-7364",
publisher = "Oxford University Press",
number = "6",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - A century of B chromosomes in plants

T2 - So what?

AU - Houben, Andreas

AU - Jones, R. Neil

AU - Viegas, W.

N1 - Jones, R. N., Viegas, W., Houben, A. (2008). A century of b chromosomes in plants: so what?  Annals of Botany, 101, (6), pp. 767-775 IMPF: 02.75

PY - 2008/4/1

Y1 - 2008/4/1

N2 - Background: Supernumerary B chromosomes (Bs) are a major source of intraspecific variation in nuclear DNA amounts in numerous species of plants. They favour large genomes, and create polymorphisms for DNA variation in natural populations. By studying Bs we can gain useful knowledge about the organization, function and evolution of genomes. There are also significant biological questions concerning the origin and structural organization of Bs, and the way in which these selfish elements can establish themselves by exploiting the replicative machinery of their host genome nucleus. Scope: It is a sine qua non that Bs originate from the A chromosomes, in a variety of ways. We can study their modes of drive and ask how it is that chromosomes which apparently lack genes can have control over their own drive process which leads to their survival in natural populations. Molecular cytogenetic studies are opening up new avenues of investigation. Population equilibria for B frequencies are determined by a balance between accumulation and harmful effects. Bs are also subject to meiotic loss due to polysomy and to elimination at meiosis as univalents. These balancing forces can be seen in the context of host/parasite interaction, based on a dissection of the genetic elements in both As and Bs (in maize) which interact to bring about a stable equilibrium, at least for a snapshot in time. Conclusions: Aside from their intrinsic enigmatic properties, B chromosomes make useful experimental tools to study genome organization. Thus far they have not been exploited for their applications, other than through the use of A-B translocations used for gene mapping in maize; but there are opportunities to use them to modulate the frequency and distribution of recombination, to diploidize allopolyploids, to study centromeres and to be developed as plant artificial chromosomes; given that they can be structurally modified and their inheritance stabilized.

AB - Background: Supernumerary B chromosomes (Bs) are a major source of intraspecific variation in nuclear DNA amounts in numerous species of plants. They favour large genomes, and create polymorphisms for DNA variation in natural populations. By studying Bs we can gain useful knowledge about the organization, function and evolution of genomes. There are also significant biological questions concerning the origin and structural organization of Bs, and the way in which these selfish elements can establish themselves by exploiting the replicative machinery of their host genome nucleus. Scope: It is a sine qua non that Bs originate from the A chromosomes, in a variety of ways. We can study their modes of drive and ask how it is that chromosomes which apparently lack genes can have control over their own drive process which leads to their survival in natural populations. Molecular cytogenetic studies are opening up new avenues of investigation. Population equilibria for B frequencies are determined by a balance between accumulation and harmful effects. Bs are also subject to meiotic loss due to polysomy and to elimination at meiosis as univalents. These balancing forces can be seen in the context of host/parasite interaction, based on a dissection of the genetic elements in both As and Bs (in maize) which interact to bring about a stable equilibrium, at least for a snapshot in time. Conclusions: Aside from their intrinsic enigmatic properties, B chromosomes make useful experimental tools to study genome organization. Thus far they have not been exploited for their applications, other than through the use of A-B translocations used for gene mapping in maize; but there are opportunities to use them to modulate the frequency and distribution of recombination, to diploidize allopolyploids, to study centromeres and to be developed as plant artificial chromosomes; given that they can be structurally modified and their inheritance stabilized.

KW - B chromosomes

KW - DNA polymorphisms

KW - host-parasite interaction

KW - mitotic/meiotic drive

KW - applications

KW - genome organization/evolution

KW - centromeres

U2 - 10.1093/aob/mcm167

DO - 10.1093/aob/mcm167

M3 - Article

VL - 101

SP - 767

EP - 775

JO - Annals of Botany

JF - Annals of Botany

SN - 0305-7364

IS - 6

ER -

View graph of relations
Citation formats