Elevated CO2 induced microclimatic flux on the growth and biochemical responses of Arundo donax L.
Keywords:
Biochemical responses, Day flux, Elevated CO2, Growth responsesAbstract
Climate change is becoming a global environmental threat. Recent climate change report of the IPCC,2021 ascertains that Earth’s average temperature will cross 1.5°C by 2040.Carbon dioxide ascend is the major reason for the accelerated levels of global temperature. Increasing levels of CO2 in the atmosphere and their overwhelming effects on climate change warrants immediate strategies for CO2 capture and storage. Carbon offset planting is an effective step in this direction. Arundo donax (Poaceae) is a C3 grass with wider distribution and higher biomass production. It is considered as an excellent bioenergy crop. The present study has been undertaken to assess the CO2 assimilation potential of Arundo donax grown under controlled experimental conditions, with elevated supply of CO2. Both morphological and biochemical changes were periodically monitored to assess their responses to elevated levels of CO2. The standardization studies and experimentation with plants was carried out for 15 days. The average day flux of CO2 attributed by the plant in the treated chamber (-358.57±74.04 ppm) was significant, compared to control (-8.57±20.19ppm) and the results of standardization studies (-77.07±16.83). The respiratory increase of CO2 was negligible.
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