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

Nhận xét

Bài đăng phổ biến từ blog này

Quản lý đội ngũ công chức, viên chức của Tổng cục Dự trữ Nhà nước

Study of eta-eta ' mixing from measurement of B-(s)(0) -> J/psi eta((')) decay rates

Xây dựng chiến lược phát triển cơ sở đào tạo tại miền Trung của Trường Đại học Nội Vụ Hà Nội đến năm 2020