Scholarlink

<p>Bacterial leaf spot (BLS) caused by <i>Xanthomonas citri</i> pv. <i>viticola</i> (<i>Xcv</i>), is a significant disease affecting grape production worldwide. Climatic pattern plays an essential role in the incidence of BLS. Meteorological variables strongly affects the stage of growth, host susceptibility, succulence, vigor, survival rate, multiplication ability, dispersion of pathogen, spore penetration and germination. Anticipating how these environmental factors are influencing these traits, could help in implementation of strategies for effective BLS management. Study was conducted to investigate factors affecting disease incidence and its management using <i>Bacillus</i> isolates. It was conducted at six different locations viz. Pune, Sangli, Solapur, Nashik, Vijayapur and Theni during 2022–23 and 2023–24. Results displayed that optimum values of environmental variables, i.e. temperature (28–32°C), relative humidity (23–91%) and rainfall (5 mm) were most favorable for the BLS development. It was observed that <i>B. australimaris</i> manifested superior multiplication and defense enzymes induction ability than <i>B. zhangzhouensis</i> both in presence or absence of <i>Xcv</i>. It was also reported that preventive application of <i>Bacillus</i> spp. is recommended than curative. Two <i>Bacillus</i> spp. which were screened have the ability to reduce disease severity at all the tested locations. Promising results were manifested by <i>B. zhangzhouensis</i>, alone and in combination with <i>B. australimaris</i>, on field for both the years. Leaves treated with <i>Bacillus</i> spp. exhibited increased level of peroxidase chitinase, polyphenol oxidase and β 1,3-glucanase activities when compared with untreated. Findings in current study revealed the biocontrol abilities of isolated endophytic <i>Bacillus</i> species as an excellent option to be used by agriculture sectors to have sustainable environment.</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

Antagonistic potential of novel Bacillus strains in grapevines to manage bacterial leaf spot disease

  • 期刊论文

  • 发表日期：

    2026年2月19日

查看全文
  • Sneha Bhosale,
  • Sujoy Saha,
  • Nayana Patil,
  • Rushikesh Bhosale

摘要

Bacterial leaf spot (BLS) caused by Xanthomonas citri pv. viticola (Xcv), is a significant disease affecting grape production worldwide. Climatic pattern plays an essential role in the incidence of BLS. Meteorological variables strongly affects the stage of growth, host susceptibility, succulence, vigor, survival rate, multiplication ability, dispersion of pathogen, spore penetration and germination. Anticipating how these environmental factors are influencing these traits, could help in implementation of strategies for effective BLS management. Study was conducted to investigate factors affecting disease incidence and its management using Bacillus isolates. It was conducted at six different locations viz. Pune, Sangli, Solapur, Nashik, Vijayapur and Theni during 2022–23 and 2023–24. Results displayed that optimum values of environmental variables, i.e. temperature (28–32°C), relative humidity (23–91%) and rainfall (5 mm) were most favorable for the BLS development. It was observed that B. australimaris manifested superior multiplication and defense enzymes induction ability than B. zhangzhouensis both in presence or absence of Xcv. It was also reported that preventive application of Bacillus spp. is recommended than curative. Two Bacillus spp. which were screened have the ability to reduce disease severity at all the tested locations. Promising results were manifested by B. zhangzhouensis, alone and in combination with B. australimaris, on field for both the years. Leaves treated with Bacillus spp. exhibited increased level of peroxidase chitinase, polyphenol oxidase and β 1,3-glucanase activities when compared with untreated. Findings in current study revealed the biocontrol abilities of isolated endophytic Bacillus species as an excellent option to be used by agriculture sectors to have sustainable environment.