|Table of Contents|

Exogenous Melatonin Regulates Salt and Alkali Stress Response of Tomato by Inducing SlRR Genes Expression

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2021年10
Page:
1-8
Research Field:
Publishing date:

Info

Title:
Exogenous Melatonin Regulates Salt and Alkali Stress Response of Tomato by Inducing SlRR Genes Expression
Author(s):
CHEN Runan; REN Chunyuan; LI He; WANG Huamei; ZHANG Yanwen; YU Gaobo
(College of Horticulture and Landscape Architecture,Heilongjiang Bayi Agricultural University，Daqing，Heilongjiang 163319)
Keywords:
tomato; MT; salt stress; alkali stress; RR; antioxidant system
PACS:
-
DOI:
10.11937/bfyy.20204002
Abstract:
Taking ‘Zheza 205’ tomato as test material,the relative expression of SlRR gene，the content of antioxidant enzyme system，reactive oxygen species and osmoregulation substances in tomato seedling leaves were measured to explore whether exogenous melatonin could effectively induce tomato RR genes expression to alleviate the damage of salt and alkali stress on tomato.The results showed that compared with the control，the expression of Solyc05g0064202(SlRR4)，Solyc10g0797001(SlRR5)，Solyc03g1137202(SlRR6)，Solyc02g0712202 (SlRR7)，Solyc01g0655402(SlRR8)，Solyc05g0543902(SlRR9)，Solyc04g080502(SlRR10) and Solyc12g0103301 (SlRR11) were significantly increased under salt and alkali treatments.The activities of superoxide dismutase (SOD)，peroxidase (POD)，ascorbate peroxidase (APX) and the content of H2O2,O?[TX-*4]2，and Pro increased significantly.Compared with the single salt and alkali treatment，the expression of SlRR4 and SlRR5 and the activities of SOD，POD，APX and content of Pro were significantly increased after melatonin pretreated tomato seedlings，while the content of H2O2 and O?[TX-*4]2 were decreased significantly.Therefore，exogenous melatonin pretreatment can significantly induce the expression of SlRR genes to improve the activity of antioxidant enzymes，reduce the production of free radicals，increase the content of osmoregulation substances to maintain the osmotic balance of plants，thus alleviating the damage of salt and alkali stress on tomato.

References:

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Last Update: 2021-08-06