Tomatoes, Roots, and Mycorrhizae
Roots and arbuscular mycorrhizae in tomato, and their acquisition of nutrients, have been a long-term research topic in our lab group. We are studying several genetic and ecological factors that control root function, and usually work in field soils to provide a context that is useful for management.
Several recent projects have addressed soil-root-microbe interactions and arbuscular mycorrhizae of tomato. We often use two genotypes of tomato plants: a mycorrhiza defective tomato mutant (rmc) or its mycorrhizal wildtype progenitor Lycopersicon esculentum Mill. cv. 76R (76R MYC+ hereafter).
Soil water extraction and water use efficiency is being studied in a group of tomato cultivars from the past 80 years, along with how other traits have changed under breeding for California's processing tomato industry.
A few of our past and current projects include:
Mycorrhizae and microbial communities in organic production
Roots, mycorrhizae, and soil respiration
Mycorrhizae and elevated CO2
- Gene expression in tomato in response to nitrogen pulses
- Trait evolution of processing tomato
- Deficit irrigation for water use efficiency without yield loss