Scholarlink

<p>Legume-rhizobial symbiosis plays a crucial role in agricultural sustainability. <i>Mesorhizobium</i>, a major root symbiont, is known to influence nodulation, nitrogen fixation, and yield in chickpea. However, there is a significant lack of research on its competitiveness and nodule occupancy in saline environments. In the present study, experiments were conducted to assess the growth kinetics of 12 <i>Mesorhizobium</i> strains and to evaluate their plant growth-promoting activities towards enhancing competitiveness for nodulation. All strains showed different growth rates, ranging from 0.10 to 0.26 per hour, and generation times ranging from 2.64 to 6.66&#xa0;h. Strains C101 and C95 showed maximum bacteriocin production potential as compared to the other <i>Mesorhizobium</i> strains. Strain C101 showed considerable P, K, Zn solubilization potential and nitrate reductase activity. Furthermore, a field investigation was conducted by seed priming to evaluate the persistence and effectiveness of these treatments under environmental conditions. In strain C101-inoculated plants, significant enhancement in shoot length, fresh weight, leaf IAA, total pigments, and nitrate reductase activity by 52, 80, 54, 37, 72%, respectively, compared to 100% PK applied uninoculated plants, was observed. Strain C101 increased root fresh weight, IAA, nodule number, nodule weight, and leghaemoglobin content by 80, 55, 46, 79%, respectively. In C101-inoculated soil, a 2.5-fold increase in dehydrogenase activity and a 2.17-fold increase in available N, and a 63% increase in soil glomalin were observed. Principal component and multivariate analyses illustrated the significant interactions among the plant and soil attributes, highlighting that C101 inoculation can be a promising intervention for enhancing soil nutrient availability, growth, and productivity in chickpea.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Potential of competitive and efficient Mesorhizobium strains to improve chickpea growth, yield, and soil health

  • 期刊论文

  • 发表日期：

    2026年7月1日

查看全文
  • Venkatesh Kokila,
  • Samia Saleem,
  • Shiv Charan Kumar,
  • Pushpendra Tiwari,
  • Sindhunath Chakraborty,
  • Murugan Kumar,
  • Hillol Chakdar,
  • Alok Kumar Srivastava,
  • Anil Kumar Saxena

摘要

Legume-rhizobial symbiosis plays a crucial role in agricultural sustainability. Mesorhizobium, a major root symbiont, is known to influence nodulation, nitrogen fixation, and yield in chickpea. However, there is a significant lack of research on its competitiveness and nodule occupancy in saline environments. In the present study, experiments were conducted to assess the growth kinetics of 12 Mesorhizobium strains and to evaluate their plant growth-promoting activities towards enhancing competitiveness for nodulation. All strains showed different growth rates, ranging from 0.10 to 0.26 per hour, and generation times ranging from 2.64 to 6.66 h. Strains C101 and C95 showed maximum bacteriocin production potential as compared to the other Mesorhizobium strains. Strain C101 showed considerable P, K, Zn solubilization potential and nitrate reductase activity. Furthermore, a field investigation was conducted by seed priming to evaluate the persistence and effectiveness of these treatments under environmental conditions. In strain C101-inoculated plants, significant enhancement in shoot length, fresh weight, leaf IAA, total pigments, and nitrate reductase activity by 52, 80, 54, 37, 72%, respectively, compared to 100% PK applied uninoculated plants, was observed. Strain C101 increased root fresh weight, IAA, nodule number, nodule weight, and leghaemoglobin content by 80, 55, 46, 79%, respectively. In C101-inoculated soil, a 2.5-fold increase in dehydrogenase activity and a 2.17-fold increase in available N, and a 63% increase in soil glomalin were observed. Principal component and multivariate analyses illustrated the significant interactions among the plant and soil attributes, highlighting that C101 inoculation can be a promising intervention for enhancing soil nutrient availability, growth, and productivity in chickpea.