Underground fungi help plant roots survive drought and salt
Rui W, Du J, Li J, Zhang J, Zhang J
Mycorrhizal Networks
The tomato plant wilting in your dry August garden bed might bounce back faster if its roots are partnered with the right soil fungi instead of struggling alone.
Most plants team up with tiny fungi living in the soil around their roots, called arbuscular mycorrhizal fungi, and this partnership isn't just about sharing nutrients. When conditions get tough, like drought or salty soil, these fungi help plants pull in water and minerals more efficiently, protect plant cells from damage, and stockpile protective compounds that keep the plant stable under pressure. Scientists still don't fully understand how the plant and fungus coordinate this defense, but it's a major reason some plants shrug off stress that would wilt others.
Key Findings
AMF enhance stress tolerance through nutrient solubilization, polyamine accumulation, and reactive oxygen species scavenging
Mycorrhizal plants accumulate protective osmolytes including trehalose, proline, and glycine betaine, and activate antioxidant enzymes to counter oxidative stress
AMF help maintain cell membrane integrity and ultrastructural stability under drought and salinity stress
chevron_right Technical Summary
A review of plant science research shows that underground fungi called mycorrhizae help plants survive drought and salty soil by improving nutrient uptake, protecting cells from damage, and boosting the plant's internal stress defenses.
Abstract Preview
Original paper
Arbuscular Mycorrhizal Fungi and Plant Resilience: Mechanisms of Drought and Salinity Stress Tolerance.
Terrestrial plants are frequently exposed to fluctuating abiotic stresses throughout their life cycle, and mycorrhizae can markedly enhance host plant resistance to such challenges. This review sum...
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