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Longevity conditioned tomato seeds: physiological and molecular studies

Grant number: 16/10716-1
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): August 01, 2016
Effective date (End): April 30, 2018
Field of knowledge:Agronomical Sciences - Agronomy - Crop Science
Principal Investigator:Edvaldo Aparecido Amaral da Silva
Grantee:Thiago Barbosa Batista
Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

The tomato is a crop of great economic importance around the world. Its fruits and seeds have high commercial value. Tomato seeds, as seeds of several species, have slow and unsynchronized germination due to the presence of seed dormancy. The presence of dormancy imposes problems during propagation and harvesting of tomatoes. Unsynchronized germination will affect the plant stand homogeneity causing losses in productivity and logistic problems at harvest time. To overcome these challenges one commonly applied technique is seed priming. Seed priming is widely used in commercial seeds and its main function is to accelerate and synchronize seed germination. However, primed seeds of tomato and other crops have low longevity caused by the priming treatment. Thus, ways to recover the longevity of primed seeds are needed to extend primed seeds storage and to serve as physiological model in studies of seed longevity. Therefore, our aim with this project is to study the action of brassinosteroids, and abscisic acid and thermal shock in maintaining longevity of primed tomato seeds. After defining the best treatments to reinduce longevity, samples of primed seeds with and without the addition of regulators will be selected to have their transcriptome evaluated. This study will assist in developing strategies (molecular markers), which may be used to increase storage of primed and untreated tomato seeds and to understand the molecular mechanisms associated with seed longevity. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PETRONILIO, ANA C. P.; BATISTA, THIAGO B.; AMARAL DA SILVA, EDVALDO A.. Osmo-priming in tomato seeds down-regulates genes associated with stress response and leads to reduction in longevity. SEED SCIENCE RESEARCH, v. 31, n. 3, p. 211-216, . (16/10716-1)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
BATISTA, Thiago Barbosa. Longevidade de sementes condicionadas de tomate: estudos fisiológicos e moleculares. 2018. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Ciências Agronômicas. Botucatu Botucatu.

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