Fungal Endophytes Promote Tomato Growth and Enhance Drought and Salt Tolerance
Fungal Endophytes Promote Tomato Growth and Enhance Drought and Salt Tolerance
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DOI：
10.3390/plants9070877
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发表时间：
2020-07
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影响因子：
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通讯作者：
M. Morsy;Blake Cleckler;Hayden Armuelles-Millican
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作者：
M. Morsy;Blake Cleckler;Hayden Armuelles-Millican
为了寻找能够提高作物产量和/或提高作物对非生物胁迫的耐受性的高效真菌内生菌，我们分离并测试了各种野生植物所藏匿的物种。从干旱胁迫、恶劣的土壤生境和内陆高盐度地区分离到67株内生真菌。我们广泛地测试了安培酵母菌的作用。和青霉属(Penicillium sp.)菌株在促进番茄生长和产量方面的作用。在温室和田间小径条件下，安培霉菌(Ampelmyces sp.)和青霉属(Penicillium sp.)事实证明，无论是在胁迫条件下还是在正常生长条件下，内生菌都能有效地为番茄带来积极的好处。安培霉菌属与干旱胁迫下的非共生植物相比，除了提高植物的整体生长和果实产量外，还赋予了对干旱胁迫下的番茄的耐受性。青霉菌与非共生植物相比，除了提高根的生物量外，还赋予了对300 mm盐分胁迫下的番茄的耐受性。与非共生植物相比，这两种内生菌在最佳实验条件下都能有效地提高植物的生长、抗逆性、恢复力和果实产量。田间番茄产量试验表明，共生番茄比非共生番茄产量高。这一数据表明，这两种安培酵母菌。和青霉属(Penicillium sp.)在改善未来农业生产方面分享有希望的潜力，特别是在预测未来气候变化的情况下。
In a search for efficient fungal endophytes that can promote crop production and/or increase crop tolerance to abiotic stress, we isolated and tested various species harbored by wild plants. Sixty-seven endophytic fungal isolates were obtained from drought stressed, poor soil habitats, and inland high salt areas. We extensively tested the roles of Ampelomyces sp. and Penicillium sp. isolates in improving tomato growth and yield. Under greenhouse and field trails, Ampelomyces sp. and Penicillium sp. endophytes proved effective in conferring positive benefits to tomatoes placed under stress as well as under normal growing conditions. Ampelomyces sp. conferred tolerance to tomatoes placed under drought stress in addition to enhancing overall plant growth and fruit yield in comparison to non-symbiotic plants under drought stress. Penicillium sp. conferred tolerance to tomatoes placed under 300 mM salinity stress in addition to enhancing root biomass in comparison to non-symbiotic plants. Both endophytes proved efficient in enhancing plant growth, stress tolerance, recovery, and fruit yield under optimal experimental conditions in comparison to non-symbiotic plants. Field testing of tomato yield showed increased yield of symbiotic tomatoes compared to non-symbiotic ones. This data suggests that both Ampelomyces sp. and Penicillium sp. share a promising potential for improving future agricultural production, particularly with the projected changes in climate in the future.