Inflorescence Development and the Role of LsFT in Regulating Bolting in Lettuce (Lactuca sativa L.)

Zijing Chen; Yingyan Han; Kang Ning; Yunyu Ding; Wensheng Zhao; Shuangshuang Yan; Chen Luo; Xiaotang Jiang; Danfeng Ge; Renyi Liu; Qian Wang; Xiaolan Zhang

doi:10.3389/fpls.2017.02248

Frontiers in Plant Science (Jan 2018)

Inflorescence Development and the Role of LsFT in Regulating Bolting in Lettuce (Lactuca sativa L.)

Zijing Chen,
Yingyan Han,
Kang Ning,
Yunyu Ding,
Wensheng Zhao,
Shuangshuang Yan,
Chen Luo,
Xiaotang Jiang,
Danfeng Ge,
Renyi Liu,
Qian Wang,
Xiaolan Zhang

Affiliations

Zijing Chen: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Yingyan Han: New Technological Laboratory in Agriculture Application in Beijing, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
Kang Ning: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Yunyu Ding: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Wensheng Zhao: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Shuangshuang Yan: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Chen Luo: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Xiaotang Jiang: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Danfeng Ge: Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
Renyi Liu: Shanghai Center for Plant Stress Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
Qian Wang: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China
Xiaolan Zhang: Department of Vegetable Science, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops, China Agricultural University, Beijing, China

DOI: https://doi.org/10.3389/fpls.2017.02248
Journal volume & issue: Vol. 8

Abstract

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Lettuce (Lactuca sativa L.) is one of the most important leafy vegetable that is consumed during its vegetative growth. The transition from vegetative to reproductive growth is induced by high temperature, which has significant economic effect on lettuce production. However, the progression of floral transition and the molecular regulation of bolting are largely unknown. Here we morphologically characterized the inflorescence development and functionally analyzed the FLOWERING LOCUS T (LsFT) gene during bolting regulation in lettuce. We described the eight developmental stages during floral transition process. The expression of LsFT was negatively correlated with bolting in different lettuce varieties, and was promoted by heat treatment. Overexpression of LsFT could recover the late-flowering phenotype of ft-2 mutant. Knockdown of LsFT by RNA interference dramatically delayed bolting in lettuce, and failed to respond to high temperature. Therefore, this study dissects the process of inflorescence development and characterizes the role of LsFT in bolting regulation in lettuce.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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