Ekinci M, Turan M, Ors S, Dursun A, Yildirim E
Department of Horticulture, Faculty of Agriculture, Atatürk University, Erzurum, Turkey.
Department of Agricultural Trade and Management, Faculty of Economy and Administrative Sciences, Yeditepe University, Istanbul, Turkey.
Photosynthetica. 2023 Feb 10;61(1):25-36. doi: 10.32615/ps.2023.005. eCollection 2023.
The current study examined the HS applications on growth, biochemical and physiological parameters of bean seedlings under saline conditions. The findings of the study indicated that salt stress decreased plant growth and development, photosynthetic activity, and mineral and hormone content [excluding abscisic acid (ABA)] in bean seedlings. Plant and root fresh mass and dry mass with HS applications increased as compared to the control treatment at the same salinity level. Both salinity and HS treatments significantly affected the net assimilation rate, stomatal conductance, transpiration rate, and intercellular CO content of bean seedlings. Significant increases occurred in HO, malondialdehyde (MDA), proline, sucrose content, enzyme activity, and ABA content with salt stress. However, HS applications inhibited the effects of salinity on plant growth, photosynthetic activity, and mineral content in beans. HS applications reduced HO, MDA, proline, sucrose content, enzyme activity, and ABA content in beans. As a result, exogenous HS applications could mitigate the negative impacts of salinity in beans.
本研究考察了腐殖酸（HS）对盐胁迫条件下菜豆幼苗生长、生化及生理参数的影响。研究结果表明，盐胁迫降低了菜豆幼苗的生长发育、光合活性以及矿物质和激素含量[不包括脱落酸（ABA）]。与相同盐度水平下的对照处理相比，施用HS后植株和根系的鲜重及干重增加。盐度和HS处理均显著影响菜豆幼苗的净同化率、气孔导度、蒸腾速率和细胞间CO含量。盐胁迫下，过氧化氢（HO）、丙二醛（MDA）、脯氨酸、蔗糖含量、酶活性和ABA含量显著增加。然而，施用HS抑制了盐度对菜豆植株生长、光合活性和矿物质含量的影响。施用HS降低了菜豆中的HO、MDA、脯氨酸、蔗糖含量、酶活性和ABA含量。因此，外源施用HS可减轻盐度对菜豆的负面影响。
