当前位置: X-MOL 学术Plant Signal Behav. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Salicylic acid modulates ACS, NHX1, sos1 and HKT1;2 expression to regulate ethylene overproduction and Na+ ions toxicity that leads to improved physiological status and enhanced salinity stress tolerance in tomato plants cv. Pusa Ruby
Plant Signaling & Behavior ( IF 2.9 ) Pub Date : 2021-07-12 , DOI: 10.1080/15592324.2021.1950888
Yalaga Rama Rao 1 , Mohammad Wahid Ansari 2 , Ranjan Kumar Sahoo 3 , Ratnum Kaul Wattal 2 , Narendra Tuteja 4 , Vellanki Ravi Kumar 1
Affiliation  

ABSTRACT

Tomato is an important crop for its high nutritional and medicinal properties. The role of salicylic acid (SA) in 1-aminocyclopropane-1-carboxylate synthase (ACS), sodium-hydrogen exchanger (NHX1), salt overly sensitive 1 (sos1) and high-affinity K+ transporter (HKT1;2) transcripts, and ACS enzyme activity and ethylene (ET) production, and growth and physiological attributes was evaluated in tomato cv. Pusa Ruby under salinity stress. Thirty days-old seedlings treated with 0 mM NaCl, 250 mM NaCl, 250 mM NaCl plus 100 µM SA were assessed for different growth and physiological parameters at 45 DAS. Results showed ACS, NHX1, sos1 and HKT1;2 transcripts were significantly changed in SA treated plants. The ACS enzyme activity and ET content were considerably decreased in SA treated plants. Shoot length (SL), root length (RL), number of leaves (NL), leaf area per plant (LA), shoot fresh weight (SFW) and root fresh weight (RFW) were also improved under SA treatment. Conversely, the electrolyte leakage and sodium ion (Na+) content were significantly reduced in SA treated plants. In addition, the endogenous proline and potassium ion (K+) content, and K+/Na+ ratio were considerably increased under SA treatment. Likewise, antioxidant enzymes (SOD, CAT, APX and GR) profile were better in SA treated plant. The present findings suggest that SA reverse the negative effects of salinity stress and stress induced ET production by modulating ACS, NHX, sos1 and HKT1;2 transcript level, and improving various growth and physiological parameters, and antioxidants enzymes profile. This will contribute to a better understanding of salinity stress tolerance mechanisms of tomato plants involving SA and ET cross talk and ions homeostasis to develop more tolerant plant.



中文翻译:

水杨酸通过调节 ACS、NHX1、sos1 和 HKT1;2 的表达来调节乙烯过量产生和 Na+ 离子毒性,从而改善番茄植株的生理状态并增强对盐胁迫的耐受性。菩萨红宝石

摘要

番茄因其高营养和药用价值而成为重要的农作物。水杨酸 (SA) 在 1-氨基环丙烷-1-羧酸合酶 (ACS)、钠氢交换剂 (NHX1)、盐过度敏感 1 (sos1) 和高亲和力 K +中的作用在番茄品种中评估转运蛋白 (HKT1;2) 转录本,以及 ACS 酶活性和乙烯 (ET) 产生,以及生长和生理特性。盐度压力下的 Pusa Ruby。在 45 DAS 评估用 0 mM NaCl、250 mM NaCl、250 mM NaCl 加 100 μM SA 处理的 30 天龄幼苗的不同生长和生理参数。结果显示 ACS、NHX1、sos1 和 HKT1;2 转录本在 SA 处理的植物中发生了显着变化。SA处理的植物中ACS酶活性和ET含量显着降低。SA处理也提高了芽长(SL)、根长(RL)、叶片数(NL)、每株叶面积(LA)、芽鲜重(SFW)和根鲜重(RFW)。反之,电解液泄漏和钠离子(Na +) 含量在 SA 处理的植物中显着降低。此外,SA处理下内源性脯氨酸和钾离子(K +)含量以及K + /Na +比值显着增加。同样,SA 处理的植物中的抗氧化酶(SOD、CAT、APX 和 GR)谱更好。目前的研究结果表明,SA 通过调节 ACS、NHX、sos1 和 HKT1;2 转录水平,并改善各种生长和生理参数以及抗氧化酶谱来逆转盐分胁迫和胁迫诱导的 ET 产生的负面影响。这将有助于更好地了解番茄植物的盐胁迫耐受机制,包括 SA 和 ET 串扰和离子稳态,从而开发出更耐受的植物。

更新日期:2021-07-12
down
wechat
bug