Carlucci Antonia, Raimondo Maria Luisa, Colucci Donato, Lops Francesco
Department of Agricultural Sciences, Food, Natural Resources and Engineering, University of Foggia, Via Napoli 25, 71122 Foggia, Italy.
Plants (Basel). 2022 May 26;11(11):1420. doi: 10.3390/plants11111420.
Fennel crop is a horticultural plant susceptible to several soil-borne fungal pathogens responsible for yield losses. The control of fungal diseases occurring on fennel crops is very difficult with conventional and/or integrated means; although several chemical fungicides are able to contain specific fungal diseases, they are not registered for fennel crops. The intensive use of some fungicides causes public concern over the environment and human health. The main aims of this study were to assess the ability of a strain of CARA17 to inhibit the growth of fungal soil-borne pathogens, and to protect fennel plants against severe fungal soil-borne pathogens such as , , , and . This study confirmed that the CARA17 strain has been able to inhibit the mycelium growth of pathogens in vitro conditions with significant inhibition degrees, where resulted in being the most controlled. The strain CARA17 was also able to significantly protect the fennel seedlings against fungal soil-borne pathogens used in vivo conditions, where the treatment with an antagonist strain by dipping resulted in being more effective at limiting the disease severity of each fungal soil-borne pathogen. Moreover, any treatment with the CARA17 strain, carried out by dipping or after transplanting, produced benefits for the biomass of fennel seedlings, showing significant effects as a promoter of plant growth. Finally, the results obtained showed that CARA17 is a valid strain as a biocontrol agent (BCA) against relevant fungal soil-borne pathogens, although further studies are recommended to confirm these preliminary results. Finally, this study allowed for first time worldwide the association of with fennel plants as a severe pathogen.
茴香作物是一种园艺植物，易受多种导致产量损失的土传真菌病原体的侵害。采用传统和/或综合方法控制茴香作物上发生的真菌病害非常困难；尽管几种化学杀菌剂能够控制特定的真菌病害，但它们未在茴香作物上登记使用。一些杀菌剂的大量使用引起了公众对环境和人类健康的关注。本研究的主要目的是评估CARA17菌株抑制土传真菌病原体生长的能力，并保护茴香植株免受诸如[此处原文未列出具体病原体名称]等严重土传真菌病原体的侵害。本研究证实，CARA17菌株在体外条件下能够抑制病原体的菌丝生长，抑制程度显著，其中[此处原文未列出具体病原体名称]的抑制效果最为显著。CARA17菌株在体内条件下也能够显著保护茴香幼苗免受土传真菌病原体的侵害，通过浸蘸拮抗菌株进行处理在限制每种土传真菌病原体的病害严重程度方面更有效。此外，通过浸蘸或移栽后使用CARA17菌株进行的任何处理都对茴香幼苗的生物量产生了有益影响，显示出作为植物生长促进剂的显著效果。最后，所获得的结果表明，CARA17作为一种针对相关土传真菌病原体的生物防治剂（BCA）是一种有效的菌株，尽管建议进一步研究以证实这些初步结果。最后，本研究首次在全球范围内确定了[此处原文未列出具体病原体名称]与茴香植株的关联，将其作为一种严重病原体。
