Elucidation of Physio-Biochemical Changes in Citrus spp. Incited by Xanthomonas citri pv. citri

نویسندگان

چکیده

India is one of the leading citrus−producing countries, next to China and Brazil. Despite sizeable production, especially lemons limes, contributes meagerly world’s citrus market. Of various factors responsible for restricted quantum export, canker (Xanthomonas citri pv. citri) serious causes directly impacts appearance fruits. Considering extent damage, present study aimed understand impact Xanthomonas (Xcc) on physio−biochemical responses in contrasting Citrus spp. Two genotypes, each three species, namely aurantifolia (Pusa Udit ALC−35), C. limon (Kagzi Kalan Konkan Seedless), paradisi (Redblush Marsh were artificially inoculated with Xcc (108 109 cfu/ mL) by pinprick method. The changes host evaluated after 48 h post inoculation (hpi). chlorophyll content (total, a, b) degradation reduction leaf gas exchange parameters, such as photosynthetic rate (A), transpiration (E), stomatal conductance (gs), intrinsic water−use efficiency (iWUE), measured a greater susceptible than resistant genotypes. microscopic observations also evidenced higher density larger areas favoring easier penetration tissues species or activities antioxidant enzymes, viz., superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), glutathione reductase (GR), contents soluble protein, phenolics genotypes contrast phenyl ammonia lyase (PAL) polyphenol oxidase (PPO) whilst levels ROS (superoxide radical hydrogen peroxide) production enhanced Based host–pathogen interaction, order resistance descending manner was found Kagzi Kalan, Seedless, Redblush, Pusa Udit, ALC−35. Further, results will enhance understanding pathogen mechanism during pathogenesis species.

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ژورنال

عنوان ژورنال: Horticulturae

سال: 2023

ISSN: ['2311-7524']

DOI: https://doi.org/10.3390/horticulturae9030324