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632.937:635.21/.24 (1) |
Boli ale plantelor. Dăunători și organisme vătămătoare pentru plante. Protejarea plantelor (977) |
Plante de grădină. Grădinărit (696) |
SM ISO690:2012 ZHANG, Zhiwei, ZHANG, Xiaoluo, NA, Ren, YANG, Shuqing, TIAN, Zaimin, ZHAO, Yan, ZHAO, Jun. StRac1 increase potato resistance against Phytophthora infestans via regulating H2O2 production. In: International Congress of Geneticists and Breeders from the Republic of Moldova, Ed. 11, 15-16 iunie 2021, Chişinău. Chișinău, Republica Moldova: Centrul Editorial-Poligrafic al Universităţii de Stat din Moldova, 2021, Ediția 11, p. 123. ISBN 978-9975-933-56-8. DOI: https://doi.org/10.53040/cga11.2021.101 |
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International Congress of Geneticists and Breeders from the Republic of Moldova Ediția 11, 2021 |
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Congresul "International Congress of Geneticists and Breeders from the Republic of Moldova" 11, Chişinău, Moldova, 15-16 iunie 2021 | ||||||
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DOI:https://doi.org/10.53040/cga11.2021.101 | ||||||
CZU: 632.937:635.21/.24 | ||||||
Pag. 123-123 | ||||||
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ROP GTPases (Rho-related GTPases from plant), a unique subgroup of the Rho family in plants, controlling plant growth and development, cell polarity and differentiation, and plant response against biotic and abiotic stresses. The present study determined the potential regulatory mechanism of potato ROP GTPase (StRac1) against Phytophthora infestans (P. infestans) infection. The expression level of StRac1 was variable in different tissues of potato, with the highest expression in young leaves of both Shepody and Hutou potato varieties. After challenging with P. infestans, the expression level of StRac1was higher in resistance varieties Zihuabai and Longshu 7 than in susceptible varieties Shepody and Desiree. The potato with transient or stable over-expression of CA-StRac1 (constitutively active form of StRac1) exhibited a dramatic enhancement of its resistance against P. infestans infections. The increased resistance level in transgenic potato was accompanied with elevated H2O2 levels. Importantly, silencing StRac1 via virusinduced gene silencing (VIGS) in potato resulted in higher susceptibility to P. infestans infection than in control plants. In summary, our data reveal that StRac1 regulates potato resistance against P. infestans via positively modulating the accumulation of H2O2. |
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