Mycorrhiza and Repeated Drought Exposure Affect Drought Resistance and Extraradical Hyphae Development of Pepper Plants Independent of Plant Size and Nutrient Content

摘要: Summary Pepper ( Capsicum annuum L.) plants with and without VA-mycorrhiza (formed by the fungus Glomus deserticola Trappe, Bloss & Menge), VAM, NVAM, respectively, were drought acclimated (DA) four cycles or kept well watered (NDA). All then subjected to an additional cycle. Similar shoot mass leaf area achieved in all treatments giving more P fertilizer NVAM than VAM plants. With few exceptions, nutrient concentrations of 12 elements, including P, either equal higher During peak stress, combination VAM-DA had greatest resistance, as indicated highest water potential, turgor, relative content frequency non-wilted Some intermediate wilting, occurred when DA applied singly. Nutrition plant size not associated this resistance. Extraradical hyphae development soil aggregation enhanced acclimation, suggesting that these improved resistance facilitating uptake.