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NON-HOST RESISTANCE IN BRACHYPODIUM DISTACHYON
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| NON-HOST RESISTANCE IN BRACHYPODIUM DISTACHYON
Zhangissina S.K. al-Farabi Kazakh National University saule.zhangisina@gmail.com Plants are facing certain challenges by fungal, oomycete, bacterial and viral pathogens. The pathogen attack and host tissues damages result in biochemical and functional changes, metabolic and physiological disorders leading to partial impairment or even complete death of the host plant. Host resistance is mostly cultivar- or accession-specific and less durable then non-host resistance (NHR), which is the resistance of plants to a plethora of non-adapted pathogens and is considered as one of the most robust resistance mechanisms of plants. It is more durable due to the reaction to different agents and is the common form of plant defense mechanism exhibited by plants toward a vast majority of potential pathogens. Moreover, non- host resistance is usually more complicated due to the involvement of multiple pathways. Complete understanding of nonhost resistance mechanisms is imperative for developing the powerful crop cultivars. The aim of the scientific-research work: advance our understanding of non-host resistance and provide new resources for improvement of durable disease resistance in soft wheat based on information obtained from a related plant model Brachypodium distachyon. An increase in the expression of genes encoding the biosynthesis of salicylic acid under the action of biotrophic pathogens, in particular Puccinia emaculata was also noted in Brachypodium distachyon. The role of protective proteins, including lectins, capable of recognizing and selectively binding a variety of carbohydrates, involved in the effective regulation of the intensity of the intake and in the effective system of plant response to pathogens, and subsequent restoration of the integrity of the plant cell, transmission of signals to plant tissues and cells, in synthesis of the final protective product and disruption of the vital pathogen functions has been shown as well. Scientific adviser: PhD, Assistant Professor Zhussupova A.I. жүктеу/скачать 2,79 Mb. Достарыңызбен бөлісу:
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