Morales-Quintana Luis, Moya Mario, Santelices-Moya Rómulo, Cabrera-Ariza Antonio, Rabert Claudia, Pollmann Stephan, Ramos Patricio
Multidisciplinary Agroindustry Research Laboratory, Instituto de Ciencias Biomédicas, Facultad Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile.
Plant Microorganism Interaction Laboratory, Centro del Secano, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Talca, Chile.
Front Microbiol. 2022 Aug 25;13:939955. doi: 10.3389/fmicb.2022.939955. eCollection 2022.
Strawberry is one of the most widely consumed fruit, but this crop is highly susceptible to drought, a condition strongly associated with climate change, causing economic losses due to the lower product quality. In this context, plant root-associated fungi emerge as a new and novel strategy to improve crop performance under water-deficiency stress. This study aimed to investigate the supplementation of two Antarctic vascular plant-associated fungal endophytes, and , in strawberry plants to develop an efficient, effective, and ecologically sustainable approach for the improvement of plant performance under drought stress. The symbiotic association of fungal endophytes with strawberry roots resulted in a greater shoot and root biomass production, higher fruit number, and an enhanced plant survival rate under water-limiting conditions. Inoculation with fungal endophytes provokes higher photosynthetic efficiency, lower lipid peroxidation, a modulation in antioxidant enzymatic activity, and increased proline content in strawberry plants under drought stress. In conclusion, promoting beneficial symbiosis between plants and endophytes can be an eco-friendly strategy to cope with drought and help to mitigate the impact of diverse negative effects of climate change on crop production.
草莓是消费最为广泛的水果之一，但这种作物极易受到干旱影响，而干旱与气候变化密切相关，会因产品质量下降导致经济损失。在此背景下，植物根系相关真菌成为一种提高作物在缺水胁迫下性能的全新策略。本研究旨在探究向草莓植株中添加两种与南极维管植物相关的真菌内生菌，以为提高干旱胁迫下植物性能开发一种高效、有效且生态可持续的方法。真菌内生菌与草莓根系的共生关系导致在水分限制条件下地上部和根系生物量产量更高、果实数量更多以及植物存活率提高。在干旱胁迫下，接种真菌内生菌可提高草莓植株的光合效率、降低脂质过氧化、调节抗氧化酶活性并增加脯氨酸含量。总之，促进植物与内生菌之间的有益共生可能是应对干旱的一种生态友好型策略，并有助于减轻气候变化对作物生产的各种负面影响。
