Haploids in the Improvement of Poaceae

Devaux, Pierre; Pickering, R. A.

doi:10.1007/3-540-26889-8_11

Cited by 52 publications

(38 citation statements)

References 184 publications

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“…Diploid barley species encode two CENH3 variants whose gene products are intermingled throughout mitotic and meiotic centromeres (2). In stable species combinations, crossspecies incorporation of CENH3 occurs despite centromeresequence differences.…”

Section: Centromeric Loss Of Cenh3 Protein Is Involved In the Process Ofmentioning

confidence: 99%

Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids

Sanei

Pickering

Kumke

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

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277

231

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Uniparental chromosome elimination occurs in several interspecific hybrids of plants. We studied the mechanism underlying selective elimination of the paternal chromosomes during the early development of Hordeum vulgare × Hordeum bulbosum embryos. The following conclusions regarding the role of the centromere-specific histone H3 variant (CENH3) in the process of chromosome elimination were drawn: (i) centromere inactivity of H. bulbosum chromosomes triggers the mitosis-dependent process of uniparental chromosome elimination in unstable H. vulgare × H. bulbosum hybrids; (ii) centromeric loss of CENH3 protein rather than uniparental silencing of CENH3 genes causes centromere inactivity; (iii) in stable species combinations, cross-species incorporation of CENH3 occurs despite centromere-sequence differences, and not all CENH3 variants get incorporated into centromeres if multiple CENH3s are present in species combinations; and (iv) diploid barley species encode two CENH3 variants, the proteins of which are intermingled within centromeres throughout mitosis and meiosis.kinetochore | interspecies hybridization | micronuclei | wide crosses

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Section: Centromeric Loss Of Cenh3 Protein Is Involved In the Process Ofmentioning

confidence: 99%

Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids

Sanei

Pickering

Kumke

et al. 2011

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

277

231

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“…The production of doubled haploid (DH) plants has become a key tool in advanced plant breeding (Devaux and Pickering 2005). Plant breeders are increasingly using this system in their mainstream pure-line programs to reduce the number of years needed from crosses to commercial variety registration (for an extensive review of the techniques most commonly used in a large number of major crops see the landmark publication of Kasha and Maluszynski (2003).…”

Section: Introductionmentioning

confidence: 99%

Improvements in the production of doubled haploids in durum wheat (Triticum turgidum L.) through isolated microspore culture

Cistué

Romagosa

Batlle³

et al. 2009

Plant Cell Rep

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“…The production of doubled-haploid (DH) plants is a useful tool for breeding in many crop species (Devaux and Pickering 2005), and has generated a number of commercial cultivars (Devaux et al 1996;Szarejko 2003). The most commonly used system for large-scale DH production in barley is microspore embryogenesis (ME), through either anther culture or isolated microspore culture (Szarejko 2003).…”

Section: Introductionmentioning

confidence: 99%

Microspore embryogenesis in barley: anther pre-treatment stimulates plant defence gene expression

Jacquard

Mazeyrat-Gourbeyre

Devaux³

et al. 2008

Planta

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Microspore embryogenesis (ME) is a process in which the gametophytic pollen programme of the microspore is reorientated towards a new embryo sporophytic programme. This process requires a stress treatment, usually performed in the anther or isolated microspores for several days. Despite the universal use of stress to induce ME, very few studies have addressed the physiological processes that occur in the anther during this step. To further understand the processes triggered by stress treatment, we followed the response of anthers by measuring the expression of stressrelated genes in two barley (Hordeum vulgare L.) cultivars differing in their ME response. Genes encoding enzymes involved in oxidative stress (glutathione-S-transferase, GST; oxalate oxidase, OxO), in the synthesis of jasmonic acid (13-lipoxygenase, Lox; allene oxide cyclase, AOC; allene oxide synthase, AOS) and in the phenylpropanoid pathway (phenylalanine ammonia lyase, PAL), as well as those encoding PR proteins (Barwin, chitinase 2b, Chit 2b; glucanase, Gluc; basic pathogenesis-related protein 1, PR1; pathogenesis-related protein 10, PR10) were up-regulated in whole anthers upon stress treatment, indicating that anther perceives stress and reacts by triggering general plant defence mechanisms. In particular, both OxO and Chit 2b genes are good markers of anther reactivity owing to their high level of induction during the stress treatment. The effect of copper sulphate appeared to limit the expression of defence-related genes, which may be correlated with its positive effect on the yield of microspore embryos.

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Haploids in the Improvement of Poaceae

Cited by 52 publications

References 184 publications

Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids

Loss of centromeric histone H3 (CENH3) from centromeres precedes uniparental chromosome elimination in interspecific barley hybrids

Improvements in the production of doubled haploids in durum wheat (Triticum turgidum L.) through isolated microspore culture

Microspore embryogenesis in barley: anther pre-treatment stimulates plant defence gene expression

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