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Publication Type J
Authors Zhang, H; Hu, MF; Ma, HY; Jiang, L; Zhao, ZY; Ma, JB; Wang, L
Author Full Name Zhang, Hao; Hu, Mingfang; Ma, Hongyuan; Jiang, Li; Zhao, Zhenyong; Ma, Jinbiao; Wang, Lei
Title Differential Responses of Dimorphic Seeds and Seedlings to Abiotic Stresses in the Halophyte Suaeda salsa
Source FRONTIERS IN PLANT SCIENCE
Language English
Document Type Article
Author Keywords germination index; halophyte; salt stress; seed heteromorphism; seedling growth; Suaeda salsa
Keywords Plus HETEROMORPHIC SEEDS; GERMINATION; SALINE; GROWTH; TEMPERATURE; ACCUMULATION; PLANT; LIGHT
Abstract The period between seed germination and seedling establishment is one of the most vulnerable stages in the life cycle of annuals in the saline environments. Although germination characteristics of Suaeda salsa seeds have been reported, the comparative germination patterns of dimorphic seeds and seedling growth to different abiotic stresses remain poorly understood. In this study, germination responses of dimorphic seeds to light and temperature were compared. Meanwhile, responses of dimorphic seeds and thereafter seedlings of S. salsa to different concentrations of NaCl and Na2SO4 were also tested. The results showed that the light did not significantly affect germination percentage of brown seeds, but significantly promoted germination of black seeds. Brown seeds could reach high germination percentage over a wide temperature range, however, germination of black seeds gradually increased with the increase of temperature. Brown seeds had higher germination percentage and velocity than black seeds under the same salt conditions. However, black seeds had higher recovery germination than brown seeds when transferred to deionized water. Young seedlings had lower salt tolerance than germinating seeds. At the same concentrations, Na2SO4 had stronger inhibitory effect on seed germination and seedling growth than NaCl. This study comprehensively compared germination traits of dimorphic seeds and seedling growth of S. salsa, and then developed a conceptual model to explain their adaptation to harsh saline environment.
Author Address [Zhang, Hao; Hu, Mingfang; Jiang, Li; Zhao, Zhenyong; Ma, Jinbiao; Wang, Lei] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Zhang, Hao; Zhao, Zhenyong; Wang, Lei] Univ Chinese Acad Sci, Beijing, Peoples R China; [Ma, Hongyuan] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun, Peoples R China
Reprint Address Ma, JB; Wang, L (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China.; Wang, L (corresponding author), Univ Chinese Acad Sci, Beijing, Peoples R China.
E-mail Address majinbiao@ms.xjb.ac.cn; egjwang@ms.xjb.ac.cn
Funding Agency and Grant Number State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences [G2018-02-04]; National Key Research and Development Program of China [2018YFE0207200]; Foundation for Western Young Scholars, Chinese Academy of Sciences [2017-XBQNXZ-A-001]
Funding Text This work was funded by the State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (G2018-02-04), the National Key Research and Development Program of China (2018YFE0207200), and the Foundation for Western Young Scholars, Chinese Academy of Sciences (2017-XBQNXZ-A-001).
Publisher FRONTIERS MEDIA SA
Publisher City LAUSANNE
Publisher Address AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, CH-1015, SWITZERLAND
ISSN 1664-462X
ISBN 1664-462X
29-Character Source Abbreviation FRONT PLANT SCI
ISO Source Abbreviation Front. Plant Sci.
Publication Date APR 12
Year Published 2021
Volume 12
Article Number 630338
Digital Object Identifier (DOI) 10.3389/fpls.2021.630338
Page Count 11
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number RS3UT
Unique Article Identifier WOS:000643707900001
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