DNA fragmentation is regulated by ethylene during carpel senescence in <i>Pisum sativum</i>

Orzáez, Diego; Granell, Antonio

doi:10.1046/j.1365-313x.1997.11010137.x

Cited by 155 publications

(76 citation statements)

References 29 publications

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“…nitrogen, phosphorus) (Tully et al 2013;Schneider et al 2017a), are accelerated by calcium deficiency, a known regulator of senescence (Ferguson 1984;Lascaris and Deacon 1991a), are influenced by ethylene (Jackson and Osborne 1970;Schneider et al 2017c), accumulate pathogenesisrelated (PR) proteins in very early stages of senescence (Tamas et al 1998;Quirino et al 2000;, and are a type of PCD (van der Kop et al 2003;Schneider et al 2017c). Defender Against Death 1 (DAD1), a negative regulator of PCD (Moharikar et al 2007), is significantly downregulated at the onset of RCS in barley roots (Schneider et al 2017c), petal senescence of pea (Orzaez and Granell 1997a;Orzaez and Granell 1997b) and gladiolus (Yamada et al 2004), and leaf senescence of iris and carnation (van der Kop et al 2003). However, RCS and leaf senescence are different with respect to regulation and implications for plant fitness.…”

Section: Regulation Of Rcs Developmentmentioning

confidence: 99%

Functional implications of root cortical senescence for soil resource capture

Schneider

Lynch

2017

Plant Soil

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Background Root phenes play a primary role in plant adaptation to edaphic stress. Understanding the functional implications of root phenotypes will enable the development of crop varieties with improved soil resource acquisition. Root cortical senescence (RCS) is a type of programmed cell death in cortical cells of several Poaceae species. Until recently there has been very little attention to the functional implications of RCS for water and nutrient capture. Scope We explore the functional implications of RCS as an adaptive trait for water and nutrient acquisition. The present review summarizes evidence from our own studies and other published work, and provides novel insights into the fitness landscape of RCS. Progress has recently been achieved in understanding the development and physiological implications of RCS. We propose that RCS is a useful trait for water and nutrient acquisition, particularly in edaphic stress conditions. Conclusions Further research is needed to understand the utility and tradeoffs of RCS in the context of specific environments, management practices, and phenotypic backgrounds. The utility of RCS for improved plant performance under edaphic stress merits investigation in the field. RCS may be a useful breeding target for improved soil resource capture in several major crop species including wheat, barley, and triticale.

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Section: Regulation Of Rcs Developmentmentioning

confidence: 99%

Functional implications of root cortical senescence for soil resource capture

Schneider

Lynch

2017

Plant Soil

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“…The inhibition of ethylene synthesis or perception blocked camptothecin-induced PCD in tomato suspension cells (De Jong et al 2002). In pea carpels, the appearance of both DNA ladders and condensed nuclei was prevented by ethylene inhibitors, and ethylene treatment accelerated DNA fragmentation (Orzáez and Granell 1997). Delayed tapetal degeneration was found in the anthers of these transformants.…”

Section: Expression Of a Mutated Ethylene Receptor Gene Affects Floramentioning

confidence: 95%

Production of male sterile transgenic plants

Takada

Kamada

Ezura

2005

Plant Biotechnology

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Ethylene controls many physiological and developmental processes in plants, including fruit and flower development, reproductive physiology, and responses to environmental stimuli. Ethylene exerts its effects through the ethylene receptor of plants. Ethylene receptor genes have been isolated in a variety of plant species, and in early studies, these genes were used to genetically engineer fruit ripening in tomato and flower senescence in petunia and carnation. Recently, we demonstrated that the over-expression of mutated melon ethylene receptor genes affected pollen development and induced a male sterile phenotype in transgenic plants. One major concern regarding genetically modified plants is the transgene flow through pollen dispersal, which may pose a potential impact to the environment, especially on genetic diversity. Therefore, the inducible male sterility system using mutated ethylene receptor genes could be a possible strategy for preventing pollen dispersal from these plants, thereby reducing the potential impact associated with transgenic plants. This review summarizes the studies on the inducible male sterility system that uses ethylene receptor genes.

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“…10,11) These studies and our results suggest that transient expression systems using almost any fruit can be established. In addition, an agroinjection assay using tomato fruit has been reported to be a useful transient gene expression system mediated by the injection of Agrobacterium, 12) but transgene expression using agroinjection appeared and was detected first 3-4 d after gene transfer. Thus our protocol is a faster and simpler transient expression system.…”

Section: )mentioning

confidence: 99%