Earth and Environmental Sciences Division, Los Alamos National Laboratory, MS J495, PO Box 1663, Los Alamos, NM, 87545, USA.
Department of Biological Sciences and Center for Adaptable Western Landscapes, Northern Arizona University, Flagstaff, AZ, 86011, USA.
Sci Rep. 2023 Sep 2;13(1):14424. doi: 10.1038/s41598-023-41191-5.
Rhizosphere microbes, such as root-associated fungi, can improve plant access to soil resources, affecting plant health, productivity, and stress tolerance. While mycorrhizal associations are ubiquitous, plant-microbe interactions can be species specific. Here we show that the specificity of the effects of microbial symbionts on plant function can go beyond species level: colonization of roots by ectomycorrhizal fungi (EMF) of the genus Geopora has opposite effects on water uptake, and stomatal control of desiccation in drought tolerant and intolerant genotypes of pinyon pine (Pinus edulis Engelm.). These results demonstrate, for the first time, that microorganisms can have significant and opposite effects on important plant functional traits like stomatal control of desiccation that are associated with differential mortality and growth in nature. They also highlight that appropriate pairing of plant genotypes and microbial associates will be important for mitigating climate change impacts on vegetation.
根际微生物，如与根相关的真菌，可以改善植物对土壤资源的利用，从而影响植物的健康、生产力和抗逆能力。虽然菌根共生关系普遍存在，但植物-微生物的相互作用可能具有物种特异性。在这里，我们表明，微生物共生体对植物功能的特异性影响可以超出物种水平：外生菌根真菌（Geopora 属）在耐旱和不耐旱的矮松（Pinus edulis Engelm.）基因型的根中定殖，对水分吸收和气孔对干旱胁迫的控制有相反的影响。这些结果首次证明，微生物可以对与自然中不同死亡率和生长相关的重要植物功能性状（如气孔对干旱的控制）产生显著的、相反的影响。它们还强调，为了减轻气候变化对植被的影响，选择合适的植物基因型和微生物共生体将是很重要的。
