Использование молекулярно-генетических методов для определения степени распространенности грибов рода Myrothecium на растениях озимой пшеницы в различные фазы вегетации
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Myrotheciumroridum+Myrotheciumverrucaria+PCR+wheat (1)
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ИГНАТОВА, Зоя, ГРЭЖДИЕРУ, Кристина. Использование молекулярно-генетических методов для определения степени распространенности грибов рода Myrothecium на растениях озимой пшеницы в различные фазы вегетации. In: Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective, 26-27 iunie 2019, Bălți. Balti, Republic of Moldova: Tipogr. „Indigou Color”, 2020, Ediția 4, pp. 47-51. ISBN 978-9975-3382-6-4.
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Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective
Ediția 4, 2020
Conferința "Ştiinţa în Nordul Republicii Moldova: realizări, probleme, perspective"
Bălți, Moldova, 26-27 iunie 2019

Использование молекулярно-генетических методов для определения степени распространенности грибов рода Myrothecium на растениях озимой пшеницы в различные фазы вегетации

CZU: Myrotheciumroridum+Myrotheciumverrucaria+PCR+wheat

Pag. 47-51

Игнатова Зоя, Грэждиеру Кристина
 
Институт генетики, физиологии и защиты растений
 
Disponibil în IBN: 23 noiembrie 2020


Rezumat

Myrothecium roridum and Myrothecium verrucaria are fungal pathogens with a wide range of host plants. They produce micotoxins roridin and verucarin and thus are considered a threat for crops and human health. Myrothecium species are capable of inhabiting different habitats – from soil to walls and paper, and are presented worldwide. Usually they are referred as weak pathogens; however, some researchers state that their impact on crop productivity is underestimated and more detailed studies on their pathogenity should be conducted. M. roridum and M. verrucaria can cause significant loses of crop yield under favorable environmental conditions, when air exceeds 70% and soil is watered abundantly. They cause root rot, seed rot and leaf blight that is distinguished by dark-brown spots on leaves and lesions on stems. M. roridum was found to be more pathogenic than M. verrucaria. Mostly, identification of M. roridum and M. verrucaria is based on morphological criteria and is not always valid. Therefore, a new, more precise approach for their differentiation is needed. Current paper outlines the presence of Myrothecium roridum and M. verrucaria in winter wheat plants of local variety Moldova 79 at different stages of vegetation. As a valuable crop with highest economic importance for Republic of Moldova, winter wheat deserves the most accurate studies in terms of pathogens’ diagnostics for developing adequate phytosanitary strategies. Using PCR, species-specific identification of studied fungi was conducted. Myrothecium verrucaria was absent in wheat plants during vegetation while presence of M. roridum in different plant organs at each vegetation stage was stated. Most frequently, he was observed in leaves and root system. Only a few samples of spikelets were infected with fungal DNA.

Cuvinte-cheie
Myrothecium roridum, Myrothecium verrucaria, PCR, Wheat