Endophyte function in climate-stressed crops: integrating molecular regulation, metabolic trade-offs, and ecological constraints.
Harsonowati W, Sanjaya LL, Krismawati A, Rembang JHW, Rawung JBM
Climate Adaptation
Those tiny microbes colonizing your tomato roots right now may be the difference between a harvest and a wilted failure during a July heat wave — but only if the plant isn't already too stressed to cooperate with them.
Plants host invisible communities of fungi and bacteria inside their tissues that can help them handle tough conditions like drought or heat. But this review found that this partnership breaks down when conditions get too extreme — the plant runs low on energy, its internal chemistry goes haywire, and the microbes can no longer do their job. Scientists are now trying to figure out exactly where that breaking point is so we can predict when these helpful microbes will actually make a difference.
Key Findings
Endophyte benefits collapse under severe stress when the plant's antioxidant defenses are overwhelmed and reactive oxygen molecules accumulate beyond a functional threshold.
Carbon allocation trade-offs are a key bottleneck: stressed plants prioritize survival over feeding their microbial partners, starving the symbiosis at the moment it's needed most.
A predictive framework is proposed using measurable variables — including photosynthetic stability, antioxidant capacity, and carbon balance — to forecast whether endophytes will help or fail under a given stress scenario.
chevron_right Technical Summary
Beneficial microbes living inside plants (endophytes) can help crops survive heat, drought, and disease, but only under the right conditions. This review builds a framework to predict when those microbes actually work — and when stress overwhelms them.
Abstract Preview
Climate change increasingly exposes crops to simultaneous abiotic and biotic stresses, disrupting physiological stability and reducing agricultural productivity. Although endophytes are widely reco...
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