Cryptochrome 1a influences source-sink partitioning during different stages of growth in tomato

Author(s)

D'Amico-Damiao, Victor ^[1] ; dos Santos, Joel Cabral ^[1] ; Girotto, Natalia Carvalho ^[1] ; Carvalho, Rogerio Falleiros ^[1]

Affiliation

^[1] Sao Paulo State Univ Unesp, Dept Biol Appl Agr, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal - Brazil

• Document type: Journal article
• Source: THEORETICAL AND EXPERIMENTAL PLANT PHYSIOLOGY; v. 31, n. 2, p. 295-302, JUN 2019.
• Web of Science Citations: 0

Abstract

Cryptochromes are photoreceptors that coordinate multiple processes during the plant life cycle through UV-A/blue light. In the present study, we used tomato cry1a mutant to understand how LeCRY1a influences the vegetative and reproductive development during different stages of growth. When compared to the wild type of tomato, the cry1a mutant showed greater plant height, number of leaves and leaf area during the life cycle. However, leaf pigment biosynthesis in cry1a was impaired compared with wild-type plants. Moreover, cry1a influenced the partitioning of photoassimilates between the shoot and root, mainly by positively influencingthe initial root growth. Although the wild-type plants exhibited lower shoot and root biomass accumulation at the final stage of plantgrowth than did the mutant, the wild typeexhibited higher yield, as evidenced by its greater number of ripe fruits per plant. The results reveal a complex role of cry1a throughout shoot and root growth and fruit development in tomato, causing this photoreceptor to stand out as target moleculesfor plant breedingprograms. (AU)

• FAPESP's process: 17/26130-9 - Are the cryptochromes part of the stress response signaling induced by water deficit in tomato?
• Grantee: Victor D'Amico Damião
• Support Opportunities: Scholarships in Brazil - Doctorate