Cytological modifications in zucchini yellow mosaic virus (ZYMV)-infected Styrian pumpkin plants

Cytological modifications in zucchini yellow mosaic virus (ZYMV)-infected Styrian pumpkin plants The present research demonstrates severe ultrastructural changes induced by zucchini yellow mosaic virus (ZYMV) within the cells of older and younger leaves of Styrian pumpkin plants ( Cucurbita pepo L. subsp. pepo var. styriaca G REB .). Cylindrical inclusions (pinwheels), proliferated endoplasmatic reticulum and filamentous viral particles were found throughout the cytoplasm of ZYMV-infected cells and within sieve elements. ZYMV-infection also induced severe modifications in the number and ultrastructure of chloroplasts, whereas mitochondria, nuclei and peroxisomes remained unaffected. A significantly lower number of chloroplasts was observed in all tissues of both ZYMV-infected leaf types when compared to control plants. Statistical quantification revealed that in chloroplasts of ZYMV-infected older and younger leaves the amount of plastoglobuli and starch increased significantly, whereas the amount of thylakoids significantly decreased. The present research gives a more precise insight in ZYMV-induced modifications within single cells and organelles, and provides statistical data of the most affected chloroplasts. Archives of Virology Springer Journals

Cytological modifications in zucchini yellow mosaic virus (ZYMV)-infected Styrian pumpkin plants

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