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Indexes of radicle are sensitive and effective for assessing copper and zinc tolerance in germinating seeds of suaeda salsa

Citation

Zhang, H and Jiang, L and Tanveer, M and Ma, J and Zhao, Z and Wang, L, Indexes of radicle are sensitive and effective for assessing copper and zinc tolerance in germinating seeds of suaeda salsa, Agriculture, 10, (10) Article 445. ISSN 2077-0472 (2020) [Refereed Article]


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DOI: doi:10.3390/agriculture10100445

Abstract

Euhalophytes, such as Suaeda salsa, are ideal candidates to remediate heavy metal-polluted saline soils. However, the metal tolerance ability of dimorphic seeds and subsequent seedlings is largely unknown. This study investigated the tolerance of S. salsa seeds to different concentrations of Cu2+ (0-300 mM) and Zn2+ (0-300 mM) during germination and seedling growth stages. Results showed that dimorphic seeds of S. salsa had high metal tolerance during germination, and even germinated under 300 mM Cu and Zn treatments. However, seedling growth was more sensitive to metal solutions and radicle growth was almost completely inhibited by Cu at 10 mM, and by Zn at 50 mM. Germinating seeds and seedlings of S. salsa had a higher metal toxicity threshold of Zn than that of Cu. In all indexes, indexes of radicle were the most sensitive and effective indicator of metal tolerance. Seeds of S. salsa germinated successfully and seedlings survived under high Zn and Cu stress. The results suggest that S. salsa could be sown directly in heavy metal-contaminated soils for phytoremediation.

Item Details

Item Type:Refereed Article
Keywords:dimorphic seed; germination index; halophyte; phytoremediation; seedling growth; Suaeda salsa
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the agricultural, food and veterinary sciences
UTAS Author:Tanveer, M (Mr Mohsin Tanveer)
ID Code:151483
Year Published:2020
Web of Science® Times Cited:7
Deposited By:Agriculture and Food Systems
Deposited On:2022-07-31
Last Modified:2022-07-31
Downloads:0

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