Journal of Plant Pathology & Microbiology

Heat-stress overview in vegetable plants

2^nd International Conference on Plant Science & Physiology

June 26-27, 2017 Bangkok, Thailand

Sumeera A

University of Agriculture, Pakistan

Posters & Accepted Abstracts: J Plant Pathol Microbiol

Abstract:

Human eat vegetables because they cannot find another food group that is as perfectly matched to our everyday human needs as vegetables, vegetables fit us like glove. From so many different perspectives, the nature of vegetables and nature of human heath are matched up in way that simply cannot be duplicated by other food groups, legumes, nuts, and seed, grains, seafoods or poultry. As temperature of the world is rising day by day due to climate change, the physiological behavior of crops is also changing and tolerance for heat is getting minimized. Stress is considered as a change in any environmental factor affecting the plant for affecting its biological and physiological response to such changes and may occasionally lead to damage. Abiotic stresses are a major concern for agriculture in the era with ever increasing food demands. Among these, heat stress is perhaps the most disturbing one. Heat stress created the alarming situation for southern Asian agriculture and causes several physiological and anatomical distortions in fruits and vegetables. Heat stress during seed germination may slow down or completely inhibit the germination and in later stages of development heat stress adversely affect photosynthesis, water relation, carbon dioxide exchange rate and the level of hormones and metabolites. Moreover throughout the plant life cycle the enhanced expression of different reactive oxygen species (ROS) and stress related proteins constitute major response of heat stress. To handle the heat stress plants use different mechanisms, production of anti-oxidants, induction of mitogen-activated proteins kinase (MAPK) and calcium dependent proteins kinase (CDPK), most significantly chaperone signaling and transpirational activation. All these mechanism adopted at molecular level enables plants to survive under heat-stress condition. In addition to genetic approaches, heat stress tolerance can be enhanced by preconditioning of plants under the variety of environmental stresses.

Biography :

Email: sumeraroy211@gmail.com