Perception of climate change and adaptation strategies in tea plantations of Assam, India

Baruah, Pradip Kumar; Handique, Gautam

doi:10.1007/s10661-021-08937-y

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…In most tea-growing regions, extremely high temperature is tightly associated with a subsequent decline in tea yield and quality with an increase in tea plant wither and fall 30 , 31 . The development of improved heat-adaptive tea varieties is a key target for breeders.…”

Section: Discussionmentioning

confidence: 99%

Investigation of heat stress responses and adaptation mechanisms by integrative metabolome and transcriptome analysis in tea plants (Camellia sinensis)

Huang,

Lei,

Duan

et al. 2024

Sci Rep

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Extreme high temperature has deleterious impact on the yield and quality of tea production, which has aroused the attention of growers and breeders. However, the mechanisms by which tea plant varieties respond to extreme environmental heat is not clear. In this study, we analyzed physiological indices, metabolites and transcriptome differences in three different heat-tolerant tea plant F1 hybrid progenies. Results showed that the antioxidant enzyme activity, proline, and malondialdehyde were significantly decreased in heat-sensitive ‘FWS’ variety, and the accumulation of reactive oxygen molecules such as H2O2 and O2− was remarkably increased during heat stress. Metabolomic analysis was used to investigate the metabolite accumulation pattern of different varieties in response to heat stress. The result showed that a total of 810 metabolites were identified and more than 300 metabolites were differentially accumulated. Transcriptional profiling of three tea varieties found that such genes encoding proteins with chaperon domains were preferentially expressed in heat-tolerant varieties under heat stress, including universal stress protein (USP32, USP-like), chaperonin-like protein 2 (CLP2), small heat shock protein (HSP18.1), and late embryogenesis abundant protein (LEA5). Combining metabolomic with transcriptomic analyses discovered that the flavonoids biosynthesis pathway was affected by heat stress and most flavonols were up-regulated in heat-tolerant varieties, which owe to the preferential expression of key FLS genes controlling flavonol biosynthesis. Take together, molecular chaperons, or chaperon-like proteins, flavonols accumulation collaboratively contributed to the heat stress adaptation in tea plant. The present study elucidated the differences in metabolite accumulation and gene expression patterns among three different heat-tolerant tea varieties under extreme ambient high temperatures, which helps to reveal the regulatory mechanisms of tea plant adaptation to heat stress, and provides a reference for the breeding of heat-tolerant tea plant varieties.

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Section: Discussionmentioning

confidence: 99%

Investigation of heat stress responses and adaptation mechanisms by integrative metabolome and transcriptome analysis in tea plants (Camellia sinensis)

Huang,

Lei,

Duan

et al. 2024

Sci Rep

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“…Furthermore, an incessant food supply in the tea microclimate favours the accumulation of phytophagic insect and mite species, sap‐sucking pest Psyllids and leaf‐eating caterpillars. The tea plant is maintained in its vegetative state throughout its economic lifespan, thus resembling a ‘single‐species forest’ that attracts arthropod species at various stages of its life cycle in a well‐defined ecological niche (Baruah & Handique, 2021; Cranham, 1966).…”

Section: Tea Ecosystemmentioning

confidence: 99%

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Borah

Hazarika

Thakur

2022

Journal of Applied Microbiology

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Tea (Camellia sinensis (L) O. Kuntze) is a long-duration monoculture crop prone to several biotic (fungal diseases and insect pest) and abiotic (nutrient deficiency, drought and salinity) stress that eventually result in extensive annual crop loss. The specific climatic conditions and the perennial nature of the tea crop favour growth limiting abiotic factors, numerous plant pathogenic fungi (PPF) and insect pests. The review focuses on the susceptibility of tea crops to PPF/pests, drought, salinity and nutrient constraints and the potential role of beneficial actinobacteria in promoting tea crop health. The review also focuses on some of the major PPF associated with tea, such as Exobasidium vexans, Pestalotiopsis theae, Colletotrichum acutatum, and pests (Helopeltis theivora). The phylum actinobacteria own a remarkable place in agriculture due to the biosynthesis of bioactive metabolites that assist plant growth by direct nutrient assimilation, phytohormone production, and by indirect aid in plant defence against PPF and pests. The chemical diversity and bioactive significance of actinobacterial metabolites (antibiotics, siderophore, volatile organic compounds, phytohormones) are valuable in the agro-economy. This review explores the recent history of investigations in the role of actinobacteria and its secondary metabolites as a biocontrol agent and proposes a commercial application in tea cultivation.

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“…Adaptive measures in crop cultivation can be taken to deal with climate change through rainwater harvesting, irrigation, reforestation, biodiversity conservation, soil mulching, and the application of windbreaks. Tea farmers are also starting to implement cultivation techniques to deal with climate change adaptation by gradually replacing synthetic fertilizers and pesticides with organic ones, building embankments along river banks, raising awareness about conserving biodiversity, and cultivating tolerant clones [9].…”

Section: Introductionmentioning

confidence: 99%

Cultivation Technology for Drought Stress Mitigation in Tea Plants: A Review

Rokhmah¹,

Astutik²,

Supriadi³

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Tea is one of the beverage crops that has a high-value economy and opportunities to increase its production. The yield and quality of the tea plants are strongly affected by environmental conditions. Global warming is followed by climate change, resulting in changes in rainfall patterns and an increase in air temperature. Changes in rainfall patterns affect drought, namely the occurrence of 3 consecutive dry months. The air temperature has increased over the last 100 years. The air temperature on the earth’s surface has increased by an average of 0.74°C. Shifting climatic conditions as a result of climate change can cause the growth and yield of tea plants to be disrupted. Tea plants can suffer from temporary wilting, chronic wilting, leaves falling off, drying shoots and young branches, and the death of twigs, main branches, and stems as a result of prolonged dryness. Drought caused damage to tea plants, resulting in a 53% decrease in yield. To overcome this, cultivation technology can be used in the following ways: (1) planting tolerant clones; (2) fertilization; (3) mulching and planting shade trees; (3) pruning; and (4) rainwater harvesting and irrigation systems.

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Perception of climate change and adaptation strategies in tea plantations of Assam, India

Cited by 8 publications

References 22 publications

Investigation of heat stress responses and adaptation mechanisms by integrative metabolome and transcriptome analysis in tea plants (Camellia sinensis)

Investigation of heat stress responses and adaptation mechanisms by integrative metabolome and transcriptome analysis in tea plants (Camellia sinensis)

Potentiality of actinobacteria to combat against biotic and abiotic stresses in tea [Camellia sinensis (L) O. Kuntze]

Cultivation Technology for Drought Stress Mitigation in Tea Plants: A Review

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