LXR^TM White Clover: Development of Transgenic White Clover (Trifolium Repens) with Delayed Leaf Senescence

Presenter Information

Y. H. Lin, La Trobe University, Australia
J. Chalmers, La Trobe University, Australia
E. Ludlow, La Trobe University, Australia
C. Pallaghy, La Trobe University, Australia
G. E. Schrauf, Universidad de Buenos Aires, Argentina
Pablo Rush, Universidad de Buenos Aires, Argentina
A. M. García, CIGEN-CONICET
A. Mouradov, La Trobe University, Australia
G. C. Spangenberg, La Trobe University, AustraliaFollow

Description

Leaf senescence is a type of programmed cell death characterized by loss of chlorophyll, lipids, protein, and RNA. Cytokinins are a class of plant hormones that play roles in many aspects of plant growth and development, including leaf senescence, apical dominance, the formation and activity of shoot meristems, nutrient mobilization, seed germination, and pathogen responses. They also appear to mediate a number of light- regulated processes, such as de-etiolation and chloroplast differentiation. It is known that the concentrations of endogenous cytokinins decline in plant tissues as senescence progresses. This observation provides the opportunity to manipulate the senescence program in transgenic plants to enhance biomass and seed production, through the regulated expression of cytokinin biosynthesis genes.

Citation

Lin, Y. H.; Chalmers, J.; Ludlow, E.; Pallaghy, C.; Schrauf, G. E.; Rush, Pablo; García, A. M.; Mouradov, A.; and Spangenberg, G. C., "LXR^TM White Clover: Development of Transgenic White Clover (Trifolium Repens) with Delayed Leaf Senescence" (2023). IGC Proceedings (1993-2023). 133.
https://uknowledge.uky.edu/igc/20/satellitesymposium5/133