Year: 2022
Type: article
Abstract: Salt stress is an adverse impact on the growth and development of plants, leading to yield losses in crops. It has been suggested that nitric oxide (NO) and calcium ion (Ca2+) act as critical signals in regulating plant growth. However, their crosstalk remains unclear under stress condition. In this study, we demonstrate that NO and Ca2+ play positive roles in the growth of tomato (Lycopersicum esculentum) seedlings under salt stress. Our data show that Ca2+ channel inhibitor lanthanum chloride (LaCl3), Ca2+ chelator ethylene glycol-bis (2-aminoethylether)-N,N,N,N-tetraacetic acid (EGTA), or calmodulin (CaM) antagonist N-(6-aminohexyl)-5-chloro-1-naphthalenesulfona-mide hydrochloride (W-7) significantly reversed the effect of NO-promoted the growth of tomato seedlings under salt stress. We further show that NO and Ca2+ significantly decreased reactive oxygen accumulation, increased proline content, and increased the activity of antioxidant enzymes, as well as increased expression of antioxidant enzymes related genes. However, LaCl3, EGTA, and W-7 prevented the positive roles of NO. In addition, the activity of downstream target enzymes related to Ca2+/CaM was increased by NO under salt stress, while LaCl3, EGTA, and W-7 reversed this enhancement. Taken together, these results demonstrate that Ca2+/CaM might be involved in NO-alleviate salt stress.
Source: Plants
Authors: Nana Qi, Ni Wang, Xuemei Hou, Yihua Li, Weibiao Liao
Institution: Gansu Agricultural University
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $2,303
Awards: G139203957, G2151806328, G2161616470, G2315287213, G2641180893, G3016752469, G3144035044, G3768602111, G3800787241, G462640336, G4730009492, G5619106003, G6117347979, G6256303293, G6523242230, G6928423155, G6951264143, 干旱条件下一氧化氮和过氧化氢诱导万寿菊不定根形成的机理及其信号转导研究, G7682934610, 干旱条件下生长素受体TIR1的亚硝基化修饰在调控万寿菊不定根发生中的功能研究, G8298157219, G8416195731, G8607939438, 一氧化氮参与氢气诱导万寿菊不定根发生的机理研究, G8695312707
OpenAlex ID: W4297004100