Characterization and systematic implications of the diversity in timing of programmed cell death of the suspensors in Leguminosae

Endo, Yasuki

doi:10.3732/ajb.1100314

Cited by 7 publications

(2 citation statements)

References 23 publications

(26 reference statements)

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“…However, caspase inhibitors can block PCD in plants, and most instances of plant PCD are associated with the induction of caspase-like activities (reviewed in Sanmartín et al, 2005). Caspase-3-like enzymes have been reported to be involved in reproductive processes in plants, such as pollen-pistil interaction in Olea (Serrano et al, 2010), self-incompatibility in Papaver Franklin-Tong, 2007, 2008), suspensor degeneration during embryogenesis in Leguminosae (Wredle et al, 2001;Lombardi et al, 2007;Endo, 2012), cotyledon dismantling during seed germination in Vigna (Egorova et al, 2010) and megagametophyte degeneration post-germination in Araucaria (Casani et al, 2009). In our system (Fig.…”

Section: Discussionmentioning

confidence: 99%

Programmed cell death in kiwifruit stigmatic arms and its relationship to the effective pollination period and the progamic phase

et al. 2014

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The data provide evidence to support the hypothesis that PCD processes occurring in the secretory tissue of non-pollinated kiwifruit stigmatic arms could be the origin for the observed short effective pollination period. The results obtained in the secretory tissue of pollinated kiwifruit stigmatic arms upon pollination support the idea that PCD might be accelerated by pollination, pointing to the involvement of PCD during the progamic phase.

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Section: Discussionmentioning

confidence: 99%

Programmed cell death in kiwifruit stigmatic arms and its relationship to the effective pollination period and the progamic phase

et al. 2014

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“…Levels of SA increase in response to PCD‐inducing infections (Mauch et al ., 2001 ; Verberne et al ., 2000 ; Ward et al ., 1991 ) and PCD development can be inhibited by expression of salicylate hydroxylase encoded by the bacterial nahG gene (Brodersen et al ., 2005 ; Rairdan and Delaney, 2002 ). Programmed cell death is indispensable for normal embryo development in plants, where temporary, surplus or aberrantly formed tissues and organs are removed to enable correct pattern formation (Bozhkov et al ., 2005 ; Endo, 2012 ; Suarez, 2004 ). Seed abortion is a PCD process but whether SA‐controlled PCD promotes seed abortion in grapes has not yet been confirmed.…”

Section: Introductionmentioning

confidence: 99%

VvHDZ28 positively regulate salicylic acid biosynthesis during seed abortion in Thompson Seedless

Jiao

Zhang

et al. 2021

Plant Biotechnology Journal

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Summary Seedlessness in grapes is one of the features most appreciated by consumers. However, the mechanisms underlying seedlessness in grapes remain obscure. Here, we observe small globular embryos and globular embryos in Pinot Noir and Thompson Seedless from 20 to 30 days after flowering (DAF). From 40 to 50 DAF, we observe torpedo embryos and cotyledon embryos in Pinot Noir but aborted embryos and endosperm in Thompson Seedless. Thus, RNA‐Seq analyses of seeds at these stages from Thompson Seedless and Pinot Noir were performed. A total of 6442 differentially expressed genes were identified. Among these, genes involved in SA biosynthesis, VvEDS1 and VvSARD1, were more highly expressed in Thompson Seedless than in Pinot Noir. Moreover, the content of endogenous SA is at least five times higher in Thompson Seedless than in Pinot Noir. Increased trimethylation of H3K27 of VvEDS1 and VvSARD1 may be correlated with lower SA content in Pinot Noir. We also demonstrate that VvHDZ28 positively regulates the expression of VvEDS1. Moreover, over‐expression of VvHDZ28 results in seedless fruit and increased SA contents in Solanum lycopersicum. Our results reveal the potential role of SA and feedback regulation of VvHDZ28 in seedless grapes.

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Dying with Style: Death Decision in Plant Embryogenesis

Mira

Stasolla

2016

In Vitro Embryogenesis in Higher Plants

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Embryogenesis is a fascinating event during the plant life cycle encompassing several steps whereby the zygote develops into a fully developed embryo which, in angiosperms, is composed of an axis separating the apical meristems, and two cotyledons. Recapitulation of embryogenesis can also occur in vitro through somatic embryogenesis, where somatic cells are induced to form embryos, and androgenesis, in which embryos originate from immature male gametophytes. Besides cell division and differentiation, embryo patterning in vivo and in vitro requires the dismantling and selective elimination of cells and tissues via programmed cell death (PCD). While the manifestation of the death program has long been acknowledged in vivo, especially in relation to the elimination of the suspensor during the late phases of embryo development, PCD during in vitro embryogenesis has only been described in more recent years. Independent studies using the gymnosperm Norway spruce and the angiosperm maize have shown that the death program is crucial for the proper formation and further development of immature somatic embryos. This chapter summarizes the recent advances in the field of PCD during embryogenesis and proposes novel regulatory mechanisms activating the death program in plants.

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Characterization and systematic implications of the diversity in timing of programmed cell death of the suspensors in Leguminosae

Abstract: In Leguminosae, short-lived suspensors have thus evolved multiple times from long-lived suspensors. It remains largely unknown, however, how the embryo acquires nutrients after the early suspensor PCD.

Cited by 7 publications

References 23 publications

Programmed cell death in kiwifruit stigmatic arms and its relationship to the effective pollination period and the progamic phase

Programmed cell death in kiwifruit stigmatic arms and its relationship to the effective pollination period and the progamic phase

VvHDZ28 positively regulate salicylic acid biosynthesis during seed abortion in Thompson Seedless

Dying with Style: Death Decision in Plant Embryogenesis

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