Cytomixis in the cereal (Gramineae) microsporogenesis

Sidorchuk, Yu. V.; Novikovskaya, Anna; Дейнеко, Е. В.

doi:10.1007/s00709-015-0807-4

Cited by 22 publications

(9 citation statements)

References 34 publications

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“…& W.C. Greg. (Lavia, Ortiz, Robledo, Fernández, & Seijo, 2011), Triticum and Secale (Sidorchuk, Novikovskaya, & Deineko, 2016), Lippia alba (Mill.) N.E.…”

Section: Resultsmentioning

confidence: 99%

“…It has been proposed that the mechanism of formation of unreduced gametes by cytomixis is the development of binucleated meiocytes, formed when an entire nucleus migrates to the recipient cell (Sidorchuck et al., 2016; Mursalimov & Deineko, 2018). These nuclei show no signs of damage in the zygo‐pachytene phase and progressively continue meiotic division (Mursalimov & Deineko, 2015), being observable until the nuclear membrane disappears in metaphase I, after which they are undetectable.…”

Section: Resultsmentioning

confidence: 99%

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Occurrence of 2nmicrospore production in diploid interspecific hybrids between the wild parental species of peanut (Arachis hypogaeaL., Leguminosae) and its relevance in the genetic origin of the cultigen

et al. 2020

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Unreduced (2n) gametes are the driving force that leads to polyploidization of plants in nature and an important tool for ploidy breeding. Peanut (Arachis hypogaea L., Leguminosae) seems most likely to have originated by sexual polyploidization through interspecific hybridization between the wild diploid relatives—A. duranensis Krapov. & W.C. Greg. and A. ipaënsis Krapov. & W.C. Greg—and subsequent binding of the unreduced gametes in the hybrid. Therefore, aiming to contribute to understanding the event of polyploid origin of this important crop, we made diploid hybrids between A. duranensis and A. ipaënsis and then investigated the production of unreduced gametes in the hybrids by analyzing the size range of pollen, the constitution of the sporads, and the microsporogenesis process. The meiotic abnormalities found, such as persistent bridges, tripolar spindles, and cytomixis processes, would lead to the formation of restitution nuclei in both the first and second meiotic division. These failures in the regularity of meiosis lead to the formation of dyads and triads, and consequently to 2n pollen grains. These findings constitute the first evidence of the formation of unreduced gametes in intergenomic hybrids obtained between the wild progenitors of A. hypogaea and enable us to propose a model of origin of the crop through sexual polyploidization.

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“…& W.C. Greg. (Lavia, Ortiz, Robledo, Fernández, & Seijo, 2011), Triticum and Secale (Sidorchuk, Novikovskaya, & Deineko, 2016), Lippia alba (Mill.) N.E.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Occurrence of 2nmicrospore production in diploid interspecific hybrids between the wild parental species of peanut (Arachis hypogaeaL., Leguminosae) and its relevance in the genetic origin of the cultigen

et al. 2020

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“…Analogous localization of the nucleolus in cytomictic nuclei is evident when considering the cytomictic patterns described in different plant species, such as the cacti of the genus Consolea and various cereal species-wheat, rye, and so on (Negron-Ortiz 2007; Barton et al, 2014;Sidorchuk et al, 2016). However, the authors of the mentioned works did not pay attention to the nonrandom nucleolus localization in the migrating nuclei.…”

Section: Resultsmentioning

confidence: 99%

Behavior of nucleolus in the tobacco male meiocytes involved in cytomixis

Mursalimov

Sidorchuk

Дейнеко

2017

Cell Biology International

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Behavior of nucleolus during the nuclear migration between plant cells (cytomixis) is studied for the first time in the tobacco male meiosis. As is shown, the nucleolus is located in a nonrandom manner in the migrating nuclei. In the majority of cases, the nucleolus resides on the nuclear pole strictly opposite to the cytomictic channel. Owing to this localization, the nucleolus extremely rare enters the recipient cell, so that the nucleolar material is in most cases undetectable in the micronuclei formed after cytomixis. When a whole nucleus migrates from a donor cell to recipient, the nucleolus can leave the nucleus and remain in the donor cells either alone or with a small amount of chromatin. The causes underlying a nonrandom location of the nucleolus in cytomictic cells are discussed. It is assumed that the nucleolar material contacts the cytoplasmic cytoskeleton, which prevents migration of the nucleolus into another cell within the nucleus. The potential use of cytomixis as a model for studying the nuclear motion is discussed.

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“…If this function is disturbed or changed, the nucleus may be involved in cell‐to‐cell migration. Other researchers dispute the anchoring function of MTs in cytomixis (Sidorchuk et al, , ), for example, microsporocytes of mutant tobacco lines and wheat‐rye hybrids with partial or complete nuclear loss, there are no visible changes in reticular and radial MT systems were observed, and micronuclei were not active in organizing F‐actin bundles or MTs. In this study the authors suggested that this blockage was due to an absence of MTOCs (MT‐organizing centers) on the surface of micronuclei (Sidorchuk et al, ).…”

Section: Cytoskeleton Functions In Nuclear Migrationmentioning

confidence: 99%

Cytoskeleton and nucleoskeleton involvement in processes of cytomixis in plants

Kravets

Yemets

Blume

2017

Cell Biology International

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Cytomixis is a form of cell-to-cell nuclear migration that involves the interaction of dynamic cytoskeletal components with the nucleus through signalling systems and linker complexes. In cytomixis two known mechanisms can be involved: actomyosin and/or microtubules and their associated motors. Perinuclear actin anchors and determines the direction of nuclear movement. In microsporogenesis cytomixis is probably initiated by a cascade of signals that trigger prophase reorganization of nucleus and cytoskeleton, and is a result of cytoskeletal protein activation, as well as a weakening of mechanisms responsible for anchoring the nucleus. The interactions between nuclei and the cytoskeleton are mediated by linker complexes that play a major role in nuclear positioning and shape, chromatin-nuclear envelope interactions, nucleoskeleton organization, gene expression and genome organization. Other contributing factors include changes in the protein composition and post-translational modifications that alter protein conformation. Cytomixis appears also to have relevance to higher order structuring, influencing tissue and organ architecture, causing collective forms of cell interactions and information exchange within a single continuum. In this review we summarize our current understanding of the cytoskeleton dynamic function in cytomictic nuclear migration.

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Cytomixis in the cereal (Gramineae) microsporogenesis

Cited by 22 publications

References 34 publications

Occurrence of 2nmicrospore production in diploid interspecific hybrids between the wild parental species of peanut (Arachis hypogaeaL., Leguminosae) and its relevance in the genetic origin of the cultigen

Occurrence of 2nmicrospore production in diploid interspecific hybrids between the wild parental species of peanut (Arachis hypogaeaL., Leguminosae) and its relevance in the genetic origin of the cultigen

Behavior of nucleolus in the tobacco male meiocytes involved in cytomixis

Cytoskeleton and nucleoskeleton involvement in processes of cytomixis in plants

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