Potential of tea plants in carbon sequestration in North-East India

Research on soil enzymes and polysaccharides secreted by the roots of Salvia miltiorrhiza Bunge under abiotic stress

“…This suggests that under stress, S. miltiorrhiza can maintain the supply of nitrate-nitrogen in the root environment by down-regulating the activity of root-secreted S-NR and reducing its nitrate-nitrogen reduction ability (Coskun et al, 2017). This is consistent with nitrogen stress down-regulating NR secretion from maize roots (Qiang et al, 2021) and phosphorus stress down-regulating NR activity from cowpea roots (Qi bing-lin et al, 2010). The suggestion is that reducing nitrogen loss is a strategy for plants to cope with abiotic stress.…”

“…Biological and abiotic stress conditions alter the composition and quantity of plant root exudates, thereby altering the rhizosphere ecosystem and assisting plants in adapting to different stress environments (Chai andSchachtman, 2022, Calvo et al, 2017). During the process of plant growth, development and reproduction, about 21% of the net photosynthetic products of plants enter the soil as root exudates, and when plants adapt to different stress environments (Wang et al, 2021, Panchal et al, 2022, Pramanik and Phukan, 2020. Moreover, root exudates provide nutrients and energy to the rhizosphere microbiome, regulate the structure of microbial communities in soil, affect enzyme activities produced by microorganisms, and ultimately influence the decomposition, mineralization, and availability of organic compounds and soil nutrients (Lu et al, 2021).…”

Carbon sequestration potential under tea based cropping system

“…In other studies, doubling of cocoa biomass has also been reported when grown under Millletia and Albizzia as compared to sole crop culture (Issac et al, 2007). Tea-Albizzia plantation system may resemble an agroforestry system in the present investigation due to its dense population and green canopy although tea is botanically classified as a shrub, tea plants are maintained as bushes through periodical pruning for extending its vegetative growth stage for ease of plucking (Baruah, 1989;Pramanik and Phukan, 2020), however, due to the presence of Albizzia, the plantation system is modified by regulation of canopy structure and also nutrient enhancement by both carbon and nitrogen fixation. Presence of leguminous plants in a cropping system facilitates symbiotic association with nodulating N -fixing bacteria 2 and arbuscular mycorrhizal fungi which is an efficient strategy for soil reclamation and initiate natural succession (Chaer et al, 2011).…”

“…Studies on carbon storage in tea plantation are limited (Kamau et al, 2008). CO assimilation upto 50 % of atmospheric 2 CO in tea biomass has been reported, of which 5.9 to 8.6 % are 2 released as root exudates as organic carbon (Pramanik and Phukan, 2020). Wang et al (2016) reported organic that cultivation of jasmine and tea can improve soil fertility and carbon accumulation, thereby reducing industrial fertilizers usage and improving product quality without loss of economical profits.…”

A scoping review of the health co-benefits of climate mitigation strategies in South America

“…Carbon capture, utilization, and sequestration (CCUS) and the removal of other GHGs have been suggested as a part of the solution in the face of global warming and climate change. 56 Although in other regions of the world different carbon sequestration and renewal strategies have been proposed to reduce pollution, such as agricultural soil management, 57 biochar engineering, 58 bioenergy with carbon capture and sequestration, 59 , 60 coastal blue carbon, 61 direct air CO2 capture and sequestration, 62 afforestation, 63 , 64 graphene production, 65 ocean alkalinity enhancement, 66 carbon mineralization with crushed rocks, 67 ocean fertilization, 68 and algal cultivation, 69 in our review only one study focused on CCUS. We only found one study that evaluated the impact of afforestation (a CCUS intervention) on health.…”