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<p>Various fungal genera are known for increasing plant growth, disease resistance, and tolerance to biotic or abiotic stress in plants; these are usually classified as plant growth-promoting fungi (PGPF). <i>Fusarium</i> genus is considered one of the most important fungal plant pathogens; however, recent studies have shown that some strains of <i>Fusarium</i> induce not only the growth of plants but also development. Ten strains of <i>Fusarium</i> isolates (CFeT16, CFeR31, CFeT34, CFeR35, CFbT03, CFbT05, CFbT09, CFgT06, CFoT36, and CFsS30) belonging to <i>F. equiseti</i>, <i>F. boothii</i>, <i>F. graminearum</i>, <i>F. oxysporum</i>, and <i>F. subglutinans</i> were tested for their ability to promote the growth and development in seedlings of <i>Arabidopsis thaliana</i>. Higher growth and development were observed on the aerial part, such as modifications in the root system architecture of the seedlings inoculated separately with each <i>Fusarium</i> strain compared with the control seedlings. Biomass in inoculated seedlings increased by around 31 to 116%; on the lateral roots, an increase of 147 to 320% was observed; also, a rise of 14 to 86% was observed in the total chlorophyll content of inoculated seedlings in comparison with control seedlings. Based on the modifications of the root branching patterns observed in seedlings during interaction with <i>Fusarium</i> strains, the expression of the <i>RHD6</i> gene was evaluated, and an increase of <i>RHD6</i> transcription level was observed in the RNA from the seedlings treated with each <i>Fusarium</i> strain in comparison with control seedlings. This is the first report of <i>F. boothii</i>, <i>F. graminearum</i>, and <i>F. subglutinans</i> promoting growth and development in <i>A. thaliana</i>.</p>

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Impact of Diverse Fusarium Strains on Growth, Development, and Root Branching in Arabidopsis thaliana

  • 期刊论文

  • 发表日期：

    2025年7月22日

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  • Silvia Salas-Muñoz,
  • Dolores Briones-Reyes,
  • Fátima Berenice Salazar-Badillo,
  • Jorge Armando Mauricio-Castillo,
  • Francisco Chavira-Villegas,
  • Luis Roberto Reveles-Torres

摘要

Various fungal genera are known for increasing plant growth, disease resistance, and tolerance to biotic or abiotic stress in plants; these are usually classified as plant growth-promoting fungi (PGPF). Fusarium genus is considered one of the most important fungal plant pathogens; however, recent studies have shown that some strains of Fusarium induce not only the growth of plants but also development. Ten strains of Fusarium isolates (CFeT16, CFeR31, CFeT34, CFeR35, CFbT03, CFbT05, CFbT09, CFgT06, CFoT36, and CFsS30) belonging to F. equiseti, F. boothii, F. graminearum, F. oxysporum, and F. subglutinans were tested for their ability to promote the growth and development in seedlings of Arabidopsis thaliana. Higher growth and development were observed on the aerial part, such as modifications in the root system architecture of the seedlings inoculated separately with each Fusarium strain compared with the control seedlings. Biomass in inoculated seedlings increased by around 31 to 116%; on the lateral roots, an increase of 147 to 320% was observed; also, a rise of 14 to 86% was observed in the total chlorophyll content of inoculated seedlings in comparison with control seedlings. Based on the modifications of the root branching patterns observed in seedlings during interaction with Fusarium strains, the expression of the RHD6 gene was evaluated, and an increase of RHD6 transcription level was observed in the RNA from the seedlings treated with each Fusarium strain in comparison with control seedlings. This is the first report of F. boothii, F. graminearum, and F. subglutinans promoting growth and development in A. thaliana.