Effects of silverleaf infection on ultrastructure of foliage ofPrunus,Rosa, andPopulus

Autor:	A.G. Spiers, D. H. Hopcroft, W.R.N. Edwards
Rok vydání:	1987
Předmět:	Chondrostereum purpureum Stomatal conductance Epidermis (botany) food and beverages Plant Science Biology biology.organism_classification Palisade cell Chloroplast Prunus Botany Ultrastructure Ecology Evolution Behavior and Systematics Transpiration
Zdroj:	New Zealand Journal of Botany. 25:411-423
ISSN:	1175-8643 0028-825X
Popis:	Foliage of peach, rose, and poplar, silvered as a result of stem infection Chondrostereum purpureum, was examined by both light and electron microscopy. Silvered leaves had fewer palisade cells which were more loosely arranged than in healthy leaves. Also, the epidermis became detached from palisade cells. Both palisade and spongy mesophyll cells were highly vacuolate, and moribund chloroplasts were packed with starch granules. Cells micro-organelles showed little ultrastructural change apart from the chloroplasts which become more electron dense, and the thylakoids and intergranal lamellae which became disorganised. Leaf area, transpiration, and stomatal conductance decreased significantly as the intensity of leaf-silvering increased. Stomata of severely-silvered leaves remained closed. Affected foliage possibly died of starvation as a result of severe water stress arising from physical occlusion of vessels in conjunction with possible toxin action in the leaves.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c24fa9d0ac928b87709faa8376c7cd27 https://doi.org/10.1080/0028825x.1987.10413358 Zobrazit plný text záznamu