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Publication Type J
Authors Guo, J. R. and B. S. Wang
Title Blocked pollen release prevents fruit formation in the halophyte Elaeagnus angustifolia in non-saline habitats
Source Environmental and Experimental Botany
Language English
Author Keywords Anther dehiscence Elaeagnus angustifolia Fruitless Pollen release arabidopsis anther dehiscence cotton gossypium-hirsutum induced male-sterility salt tolerance reproductive development salinity tolerance ion accumulation suaeda-salsa transcriptome stress Plant Sciences Environmental Sciences & Ecology
Abstract Anther development affects the reproduction of flowering plants. Halophyte Elaeagnus angustifolia can bear fruits when grown in saline soils. However, no fruits are born in non-saline soils. The possible reasons and differences in E. angustifolia under two growing conditions were elucidated. We examined features including pollen viability and germination, in situ pollen germination after natural and hand pollination, anthers after pollen release, and the transcriptome in anthers. No significant difference was observed in pollen viability or stigma receptivity in E. angustifolia in non-saline vs. saline habitats. However, no pollen tubes were present in styles, and pollen grains were abundant in E. angustifolia anthers under non-saline conditions. Notably, many pollen tubes formed in styles of E. angustifolia after hand pollination in the non-saline habitat. The differentially expressed genes in anthers from saline vs. non-saline habitats were mainly related to phytohormone, cell wall secondary thickening, transcription factors and ion transport. E. angustifolia fail to form fruits in non-saline habitats due to poor anther pollen release. The induction and coordinated upregulation of genes related to anther cell wall formation and JA biosynthesis likely contribute to anther dehiscence in E. angustifolia in saline habitats, whereas anther dehiscence is blocked in plants grown in non-saline habitats.
Author Address [Guo, Jianrong; Wang, Baoshan] Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan 250014, Shandong, Peoples R China. Wang, BS (corresponding author), Shandong Normal Univ, Coll Life Sci, Shandong Prov Key Lab Plant Stress, Jinan 250014, Shandong, Peoples R China. bswang@sdnu.edu.cn
ISSN 0098-8472
ISBN 0098-8472
29-Character Source Abbreviation Environ. Exp. Bot.
Publication Date Sep
Year Published 2021
Volume 189
Beginning Page 14
Digital Object Identifier (DOI) 10.1016/j.envexpbot.2021.104566
Unique Article Identifier WOS:000672816300001

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