| Autor: |
Jyothymol, C. P., Kutty, M. Sangeeta, Pradeepkumar, T., Parvathi, M. S., Rashmi, C. R. |
| Zdroj: |
Plant Physiology Reports; September 2024, Vol. 29 Issue: 3 p638-650, 13p |
| Abstrakt: |
An investigation was conducted into how the beneficial fungal root endophyte Piriformosopra indicaimpacts the growth and physio-biochemical attributes of two watermelon varieties, Sugarbaby and Thar Manak under varying water conditions: well-watered (75% field capacity) and water-stressed (35% field capacity). Piriformosopra indicahas stimulated vegetative growth in both varieties of watermelon irrespective of the water treatments. A significantly higher root length of 31.33 cm was observed in P. indicacolonized Thar Manak at 35% field capacity. Piriformosopra indicacolonization helped in mitigating the increase in leaf temperature and decline in leaf gas exchange parameters, leaf pigment concentration, and relative water content induced by water stress. During water stress, the highest proline content was observed in colonized seedlings of Sugarbaby (119.46 μg g−1fresh weight) and lowest in non-colonized Sugarbaby seedlings (60.44 μg g−1fresh weight). Diphenyl picrylhydrazyl free radical scavenging activity and catalase activity were enhanced due to pre-treatment with P. indica. The highest free radical scavenging activity of 60.30% was observed in P. indicacolonized Thar Manak at 35% field capacity and the lowest in non-colonized Thar Manak at 75% field capacity (21.79%). Accumulation of harmful reactive oxygen species like H2O2was lower in P. indicacolonized seedlings when compared with the non-colonized ones during water stress. Although both varieties benefited due to colonization, the influence of P. indicawas more pronounced in the susceptible variety, Sugarbaby. |
| Databáze: |
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