Abstract:
:Leaf senescence is a very important trait that limits yield and biomass accumulation of agronomic crops and reduces post-harvest performance and the nutritional value of horticultural crops. Significant advance in physiological and molecular understanding of leaf senescence has made it possible to devise ways of manipulating leaf senescence for agricultural improvement. There are three major strategies in this regard: (i) plant hormone biology-based leaf senescence manipulation technology, the senescence-specific gene promoter-directed IPT system in particular; (ii) leaf senescence-specific transcription factor biology-based technology; and (iii) translation initiation factor biology-based technology. Among the first strategy, the P SAG12 -IPT autoregulatory senescence inhibition system has been widely explored and successfully used in a variety of plant species for manipulating senescence. The vast majority of the related research articles (more than 2000) showed that crops harbouring the autoregulatory system displayed a significant delay in leaf senescence without any abnormalities in growth and development, a marked increase in grain yield and biomass, dramatic improvement in horticultural performance, and/or enhanced tolerance to drought stress. This technology is approaching commercialization. The transcription factor biology-based and translation initiation factor biology-based technologies have also been shown to be very promising and have great potentials for manipulating leaf senescence in crops. Finally, it is speculated that technologies based on the molecular understanding of nutrient recycling during leaf senescence are highly desirable and are expected to be developed in future translational leaf senescence research.
journal_name
J Exp Botjournal_title
Journal of experimental botanyauthors
Guo Y,Gan SSdoi
10.1093/jxb/eru248subject
Has Abstractpub_date
2014-07-01 00:00:00pages
3901-13issue
14eissn
0022-0957issn
1460-2431pii
eru248journal_volume
65pub_type
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更新日期:2017-11-09 00:00:00
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更新日期:2020-03-12 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2008-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-11-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
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更新日期:2003-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2003-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章,评审
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更新日期:2008-01-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
doi:10.1093/jxb/eru189
更新日期:2014-08-01 00:00:00
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journal_title:Journal of experimental botany
pub_type: 杂志文章
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更新日期:2018-07-18 00:00:00
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更新日期:2011-03-01 00:00:00
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
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journal_title:Journal of experimental botany
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更新日期:2000-09-01 00:00:00
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journal_title:Journal of experimental botany
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更新日期:2011-03-01 00:00:00
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更新日期:2018-08-14 00:00:00