Scholarlink

<p>ACC deaminase is a pyridoxal phosphate-dependent enzyme that is highly prevalent in the plant-associated bacteria and fungi and is vital to the regulation of plant responses to abiotic stress. ACC deaminase reduces the stress-induced ethylene production, which otherwise suppresses plant growth and development. ACC deaminase degrade ACC, the immediate precursor of ethylene, into ammonia and 2-ketobutyrate. The acdS gene encodes the enzyme, which is highly regulated by complex transcriptional regimes containing regulatory elements including acdR (LRP family) and other related factors which respond to environmental factors. Evidence indicates that rhizobacteria with ACC deaminase activity increase root structure, nutrient uptake and salinity, drought, and heavy metal tolerance due to the coordinated hormonal regulation, antioxidant mobilization and rhizosphere interactions. Phylogenetic studies indicate that acdS is widely distributed among different bacteria and fungi. This study aims to discusses available knowledge, mechanism of action, genetics, distribution of ACC deaminase among various species, ecological role of ACC deaminase and, future research direction in developing transgenic plants through expression of foreign AcdS gene to survive biotic and abiotic stresses. ACC deaminase represents a key functional trait in soil–plant–microbe interactions with strong potential for sustainable agriculture, although further research is required to ensure reliable field-level applications.</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

Biochemical and molecular roles of ACC deaminase in plant stress tolerance and agriculture sustainability

  • 期刊论文

  • 发表日期：

    2026年4月30日

查看全文
  • Jitendra Kumar Sharma,
  • Charu Gupta,
  • Mahendra Kumar Gupta

摘要

ACC deaminase is a pyridoxal phosphate-dependent enzyme that is highly prevalent in the plant-associated bacteria and fungi and is vital to the regulation of plant responses to abiotic stress. ACC deaminase reduces the stress-induced ethylene production, which otherwise suppresses plant growth and development. ACC deaminase degrade ACC, the immediate precursor of ethylene, into ammonia and 2-ketobutyrate. The acdS gene encodes the enzyme, which is highly regulated by complex transcriptional regimes containing regulatory elements including acdR (LRP family) and other related factors which respond to environmental factors. Evidence indicates that rhizobacteria with ACC deaminase activity increase root structure, nutrient uptake and salinity, drought, and heavy metal tolerance due to the coordinated hormonal regulation, antioxidant mobilization and rhizosphere interactions. Phylogenetic studies indicate that acdS is widely distributed among different bacteria and fungi. This study aims to discusses available knowledge, mechanism of action, genetics, distribution of ACC deaminase among various species, ecological role of ACC deaminase and, future research direction in developing transgenic plants through expression of foreign AcdS gene to survive biotic and abiotic stresses. ACC deaminase represents a key functional trait in soil–plant–microbe interactions with strong potential for sustainable agriculture, although further research is required to ensure reliable field-level applications.