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Dr. Caroline Gutjahr (Genetics)

Dr. Caroline Gutjahr

Developmental biology of arbuscular mycorrhiza symbiosis

In the field, plants face a limited availability of vital mineral nutrients. To increase nutrient uptake most land plants form symbioses with root colonizing arbuscular mycorrhiza fungi that efficiently take up mineral nutrients from the soil and transport them into the root. In return they receive up to 20 % of the plants photosynthetically fixed carbon. Root colonization by arbuscular mycorrhiza fungi involves distinct and genetically separable developmental steps that are largely under plant control. These steps include drastic plant cell rearrangements that precede differentiation of fungal hyphae into particular shapes inside these plant cells. We are interested in the plant molecular mechanisms required for shaping an arbuscular mycorrhiza. Our major research line investigates molecular interconnections between plant and symbiosis development, including the role of plant hormone signaling pathways. We recently discovered novel plant genes required for arbuscular mycorrhiza development and currently investigate their function by state-of-the-art genetic, biochemical and cell biological methods.

Website: http://www.genetik.bio.lmu.de/research/gutjahr/index.html


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