内蒙古民族大学学报（自然科学版）2024，Vol.39Issue(3)：46-51,6.DOI:10.14045/j.cnki.15-1220.2024.03.009
豆科锦鸡儿属植物共生根瘤菌耐盐碱特性研究
Study on Saline-alkali Tolerance Characteristics of Symbiontic Rhizobium by Leguminous Caragana
摘要
Abstract
Caragana is a leguminous plant always grown in sandy land with high saline-alkali content.Rhizobia can establish a symbiotic system with Caragana and provide sufficient nitrogen nutrition.Two strains represented Rhizobium and Mesorhizobium genus were selected respectively to explore the saline-alkali tolerance characteristics of symbiontic rhizobia under various nutritional conditions.The results showed that both rhizobia could form effective nodules on the roots of Caragana,with significantly increased chlorophyll contents,plant-height,and aboveground dry weight.When NaCl concentration in the medium is below 1.00%or the pH value is below 9.19,the growth and reproduction of rhizobia were inhibited a little and a relatively higher concentration is detected.In contrast,when the NaCl concentration in the medium is higher than 1.25%or the pH value is higher than 9.78,the growth and reproduction rates of the rhizobia was close to 0.It was indicated that the growth and reproduction ability of rhizobia would be strong in lower saline-alkali environments but limited greatly in higher saline-alkali environ-ments.关键词
锦鸡儿属植物/根瘤菌/耐盐碱特性Key words
Caragana Fabr./rhizobia/saline-alkali tolerance characteristics分类
生物科学引用本文复制引用
乔美玲,冀照君,袁晓霞,石千卉..豆科锦鸡儿属植物共生根瘤菌耐盐碱特性研究[J].内蒙古民族大学学报（自然科学版）,2024,39(3):46-51,6.基金项目
国家自然科学基金项目(32170020) （32170020）
内蒙古自治区科技计划项目(2021GG0005) （2021GG0005）
内蒙古自治区自然科学基金项目(2022QN03030,2023MS03053) （2022QN03030,2023MS03053）
内蒙古自治区直属高校基本科研业务费项目(GXKY22055) （GXKY22055）
内蒙古自治区高等学校青年科技英才支持计划资助项目(NJYT-19-A10) （NJYT-19-A10）
内蒙古民族大学科学研究项目(NMDYB20039) （NMDYB20039）
