Comparative studies of compatible and incompatible pepper-Tobamovirus interactions and the evaluation of effects of 24-epibrassinolide
0106 biological sciences
0301 basic medicine
S1 Agriculture (General) / mezőgazdaság általában
03 medical and health sciences
Physiology
Plant Science
01 natural sciences
3. Good health
DOI:
10.1007/s11099-017-0725-0
Publication Date:
2017-04-08T03:32:15Z
AUTHORS (10)
ABSTRACT
The aim of study was to gain a deeper knowledge about local and systemic changes in photosynthetic processes and sugar production of pepper infected by Obuda pepper virus (ObPV) and Pepper mild mottle virus (PMMoV). PSII efficiency, reflectance, and gas exchange were measured 48 and/or 72 h after inoculation (hpi). Sugar accumulation was checked 72 hpi and 20 d after inoculation (as a systemic response). Inoculation of leaves with ObPV led to appearance of hypersensitive necrotic lesions (incompatible interaction), while PMMoV caused no visible symptoms (compatible interaction). ObPV (but not PMMoV) lowered Fv/Fm (from 0.827 to 0.148 at 72 hpi). Net photosynthesis decreased in ObPV-infected leaves. In ObPV-inoculated leaves, the accumulation of glucose, fructose, and glucose-6-phosphate was accompanied with lowered sucrose, maltoheptose, nystose, and trehalose contents. PMMoV inoculation increased the contents of glucose, maltose, and raffinose in the inoculated leaves, while glucose-6-phosphate accummulated in upper leaves.
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