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Characterization and variation of bacterial and fungal communities from the sapwood of Apulian olive varieties with different susceptibility to Xylella fastidiosa
bioRxiv - Microbiology Pub Date : 2020-10-23 , DOI: 10.1101/2020.10.23.351890
Arafat Hanani , Franco Valentini , Giuseppe Cavallo , Simona Marianna Sanzani , Franco Santoro , Serena Anna Minutillo , Marilita Gallo , Maroun El Moujabber , Anna Maria D’Onghia , Salvatore Walter Davino

Endophytes are symptomless fungal and/or bacterial microorganisms found in almost all living plant species. The symbiotic association with their host plants by colonizing the internal tissues has endowed them as a valuable tool to suppress diseases, to stimulate growth, and to promote stress resistance. In this context, the identification of cultivable endophytes residing the sapwood of Apulian olives might be a promising control strategy for xylem colonizing pathogens as Xylella fatidiosa . To date, olive’s sapwood cultivable endophytes are still under exploration; therefore, this work pursues a study of diversity and occurrence variation of cultivable endophytes in the sapwood of different olive varieties under the effect seasonality, geographical coordinates, and X. fastidiosa infection status . Briefly, our study confirms the stability of sapwood cultivable endophytic communities in the resistant olive variety, presents the seasonal and geographical fluctuation of olive’s sapwood endophytes, describes the diversity and occurrence frequency of fungal and bacterial genera, and finally retrieves some of sapwood-inhabiting fungal and bacterial isolates are known as biocontrol agents of plant pathogens. Thus, the potential role of these bacterial and fungal isolates in conferring olive tree protection against X. fastidiosa should be further investigated.

中文翻译:

不同耐性的木兰普利亚橄榄变种边材中细菌和真菌群落的特征和变异

内生菌是几乎在所有活植物物种中发现的无症状的真菌和/或细菌微生物。通过寄居内部组织与宿主植物共生,这使它们成为抑制疾病,刺激生长和促进抗逆性的宝贵工具。在这种情况下,鉴定位于普利亚橄榄边材中的可培养内生菌可能是木质部定植病原体(如小叶木霉)的有前途的控制策略。迄今为止,橄榄的边材可培养内生菌仍在探索中。因此,这项工作旨在研究不同橄榄品种边材中可栽培内生菌在季节,地理坐标和fastidiosa感染状况影响下的多样性和发生变化。简而言之,我们的研究证实了耐边橄榄品种中边材可培养的内生群落的稳定性,介绍了橄榄边材内生植物的季节性和地理波动,描述了真菌和细菌属的多样性和发生频率,最后获得了一些居住在边材中的真菌和细菌分离株被称为植物病原体的生物防治剂。因此,应进一步研究这些细菌和真菌分离物在赋予橄榄树抗X. fastidiosa保护作用中的潜在作用。最后回收一些居住在边材中的真菌,细菌分离株被称为植物病原体的生物防治剂。因此,应进一步研究这些细菌和真菌分离物在赋予橄榄树抗X. fastidiosa保护作用中的潜在作用。最后回收一些居住在边材中的真菌,细菌分离株被称为植物病原体的生物防治剂。因此,应进一步研究这些细菌和真菌分离物在赋予橄榄树抗X. fastidiosa保护作用中的潜在作用。
更新日期:2020-10-27
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