Development and regulation of pedicel abscission in tomato
To
shed unfertilized flowers or ripe fruits, many plant species develop a
pedicel abscission zone (AZ), a specialized tissue that develops between
the organ and the main body of the plant. Regulation of pedicel
abscission is an important agricultural concern because pre-harvest
abscission can reduce yields of fruit or grain crops, such as apples,
rice, wheat, etc. Tomato has been studied as a model system for
abscission, as tomato plants develop a distinct AZ at the midpoint of
the pedicel and several tomato mutants, such as jointless, have pedicels
that lack an AZ. This mini-review focuses on recent advances in
research on the mechanisms regulating tomato pedicel abscission.
Molecular genetic studies revealed that three MADS-box transcription
factors interactively play a central role in pedicel AZ development.
Transcriptome analyses identified activities involved in abscission and
also found novel transcription factors that may regulate AZ activities.
Another study identified transcription factors mediating abscission
pathways from induction signals to activation of cell wall hydrolysis.
These recent findings in tomato will enable significant advances in
understanding the regulation of abscission in other key agronomic
species.
Title:
Development and regulation of pedicel abscission in tomato | |
Authors: | Ito, Yasuhiro Nakano, Toshitsugu |
Keywords: | Lycopersicon esculentum Triticum aestivum Tomato MADS-box Pedicel Abscission |
Issue Date: | 2015 |
Publisher: | Frontiers Research Foundation |
Citation: | Scopus |
Abstract: | To shed unfertilized flowers or ripe fruits, many plant species develop a pedicel abscission zone (AZ), a specialized tissue that develops between the organ and the main body of the plant. Regulation of pedicel abscission is an important agricultural concern because pre-harvest abscission can reduce yields of fruit or grain crops, such as apples, rice, wheat, etc. Tomato has been studied as a model system for abscission, as tomato plants develop a distinct AZ at the midpoint of the pedicel and several tomato mutants, such as jointless, have pedicels that lack an AZ. This mini-review focuses on recent advances in research on the mechanisms regulating tomato pedicel abscission. Molecular genetic studies revealed that three MADS-box transcription factors interactively play a central role in pedicel AZ development. Transcriptome analyses identified activities involved in abscission and also found novel transcription factors that may regulate AZ activities. Another study identified transcription factors mediating abscission pathways from induction signals to activation of cell wall hydrolysis. These recent findings in tomato will enable significant advances in understanding the regulation of abscission in other key agronomic species. |
Description: | Frontiers in Plant Science, Volume 6, Issue June, 11 June 2015, Article number 442, 6p |
URI: | http://repository.vnu.edu.vn/handle/VNU_123/32179 |
ISSN: | 1664462X |
Appears in Collections: | Bài báo của ĐHQGHN trong Scopus |
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