Rhizosphere processes of tea (Camellia sinensis) plants under spatial heterogeneity of soil potassium

Li, Jianwu; Li, Xin; Hao, Guoshuang; Zhang, Fang-Fang; Ruan, Li; Manzoor,; Wang, Wenzhi

doi:10.1016/j.rhisph.2020.100299

Cited by 9 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Potassium (K) is a major macronutrient for tea’s metabolism processes which takes part in the quality and yield of tea plants. It also imparts resistance to tea plants in adverse situation ( Li et al., 2021 ). The very low and low content of AK in these tea-growing areas under consideration might be due to the loose texture of the soil, inappropriate field management practices, and the low use of K fertilizers ( Bagyalakshmi et al., 2017 ).…”

Section: Discussionmentioning

confidence: 99%

Sick or rich: Assessing the selected soil properties and fertility status across the tea-growing region of Dooars, West Bengal, India

Malakar

Timsina²,

Dutta³

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

Harnessing the potential yields of evergreen perennial crops like tea (Camellia sinensis L.) essentially requires the application of optimum doses of nutrients based on the soil test reports. In the present study, the soil pH, organic carbon (OC), available potassium as K2O (AK), and available sulphur (AS) of 7300 soil samples from 115 tea estates spread over the Dooars ranging from 88°52’E to 89°86’E longitude and 26°45’N to 27°00’N latitude of West Bengal, India have been documented. About 54% of soil samples were found within the optimum range of soil pH (4.50-5.50) for tea cultivation. The overall range of OC was found from 0.28% to 6.00% of which, 94% of the analyzed samples were within the range of satisfactory to excellent level of OC i.e. (>0.80% to 6.00%). Around 36.3% of soil samples were found to have high AK (>100 mg kg-1) but 37.1% of soils were found to have high AS content (>40 mg kg-1). The nutrient index status of soil pH was low in Dam Dim, Chulsa, Nagrakata, Binnaguri, and Jainti sub-districts. Soils from five sub-districts had a high nutrient index (2.47 to 2.83) for soil organic carbon. However, it existed in the medium index (1.69 and 2.22) for Dalgaon and Kalchini sub-districts. Only Nagrakata sub-district soil samples were in the high nutrient index (2.65) for AK. All analyzed samples showed a medium nutrient index (1.97 to 2.27) for AS. The result indicated that soil pH was significantly negatively correlated with soil OC (-0.336) and AK (-0.174). However, the soil OC was significantly positive correlated with AK (0.258) and AS (0.100). It could be concluded that a balanced fertilizer application would be needed as a part of the soil improvement program through soil chemical tests for sustainable tea cultivation.

show abstract

Section: Discussionmentioning

confidence: 99%

Sick or rich: Assessing the selected soil properties and fertility status across the tea-growing region of Dooars, West Bengal, India

Malakar

Timsina²,

Dutta³

et al. 2022

Front. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Among the 327 individuals of the F1 hybrid population produced from crossing Longjing 43 × Baihaozao, two tea genotypes, “1511” and “1601”, which had very different tolerance levels to low-K availability and root development, were identified. The “1511” was a tea genotype tolerant to low K availability with good root development, while “1601” was intolerant low K availability, with weak root development [ 16 , 21 ]. One-year-old tea cuttings of those two genotypes were used for this research employing multi-layer split-root boxes.…”

Section: Methodsmentioning

confidence: 99%

“…Two tea genotypes from the F1 hybrid population of Longjing 43 × Baihaozao hybrid were selected for this research. The two genotypes had a similar genetic background but were very different in their tolerance to low soil K availability and root development, including a low-K tolerant genotype “1511” and a low-K intolerant genotype “1601” [ 16 , 21 ]. Tea plants are highly heterozygous because of their incompatibility and frequent interspecific hybridization.…”

Section: Introductionmentioning

confidence: 99%

Root Foraging Strategy Improves the Adaptability of Tea Plants (Camellia sinensis L.) to Soil Potassium Heterogeneity

Ruan

Cheng

Ludewig

et al. 2022

IJMS

Self Cite

View full text Add to dashboard Cite

Root foraging enables plants to obtain more soil nutrients in a constantly changing nutrient environment. Little is known about the adaptation mechanism of adventitious roots of plants dominated by asexual reproduction (such as tea plants) to soil potassium heterogeneity. We investigated root foraging strategies for K by two tea plants (low-K tolerant genotype “1511” and low-K intolerant genotype “1601”) using a multi-layer split-root system. Root exudates, root architecture and transcriptional responses to K heterogeneity were analyzed by HPLC, WinRHIZO and RNA-seq. With the higher leaf K concentrations and K biological utilization indexes, “1511” acclimated to K heterogeneity better than “1601”. For “1511”, maximum total root length and fine root length proportion appeared on the K-enriched side; the solubilization of soil K reached the maximum on the low-K side, which was consistent with the amount of organic acids released through root exudation. The cellulose decomposition genes that were abundant on the K-enriched side may have promoted root proliferation for “1511”. This did not happen in “1601”. The low-K tolerant tea genotype “1511” was better at acclimating to K heterogeneity, which was due to a smart root foraging strategy: more roots (especially fine roots) were developed in the K-enriched side; more organic acids were secreted in the low-K side to activate soil K and the root proliferation in the K-enriched side might be due to cellulose decomposition. The present research provides a practical basis for a better understanding of the adaptation strategies of clonal woody plants to soil nutrient availability.

show abstract

“…Supply of K and Ca is positively associated with plant root length and density and with exudation of organic acids (Lijun et al., 2011; Xu et al., 2021a,b). Indeed, release of root exudates mobilizes K in the rhizosphere, leading to subsequent increases in plant K uptake (Li et al., 2020; Xu et al., 2021a,b; Yang et al., 2020), likely as a result of carboxylates in exudates that are positively correlated with K uptake across a range of plant species (Suriyagoda et al., 2012). This release of root exudates that mobilize K, which depends on soil K availability (Li et al., 2020; Yang et al., 2020), varies with genotype within a species, such as observed in Camelia sinensis and Nicotiana tabacum (Li et al., 2020; Yang et al., 2019), with K‐stress‐tolerant genotypes releasing greater amounts of organic acids in root exudates (Yang et al., 2020).…”

Section: Do Root Exudates Contribute To Uptake Of Metal Nutrients?mentioning

confidence: 99%

Role of mycorrhizas and root exudates in plant uptake of soil nutrients (calcium, iron, magnesium, and potassium): has the puzzle been completely solved?

et al. 2023

View full text Add to dashboard Cite

Anthropogenic global change is driving an increase in the frequency and intensity of drought and flood events, along with associated imbalances and limitation of several soil nutrients. In the context of an increasing human population, these impacts represent a global-scale challenge for biodiversity conservation and sustainable crop production to ensure food security. Plants have evolved strategies to enhance uptake of soil nutrients under environmental stress conditions; for example, symbioses with fungi (mycorrhization) in the rhizosphere and the release of exudates from roots. Although crop cultivation is managed for the effects of limited availability of nitrogen (N) and phosphorus (P), there is increasing evidence for limitation of plant growth and fitness because of the low availability of other soil nutrients such as the metals potassium (K), calcium (Ca), magnesium (Mg), and iron (Fe), which may become increasingly limiting for plant productivity under global change. The roles of mycorrhizas and plant exudates on N and P uptake have been studied intensively; however, our understanding of the effects on metal nutrients is less clear and still inconsistent. Here, we review the literature on the role of mycorrhizas and root exudates in plant uptake of key nutrients (N, P, K, Ca, Mg, and Fe) in the context of potential nutrient deficiencies in crop and non-crop terrestrial ecosystems, and identify knowledge gaps for future research to improve nutrient-uptake capacity in food crop plants.

show abstract

Rhizosphere processes of tea (Camellia sinensis) plants under spatial heterogeneity of soil potassium

Cited by 9 publications

References 32 publications

Sick or rich: Assessing the selected soil properties and fertility status across the tea-growing region of Dooars, West Bengal, India

Sick or rich: Assessing the selected soil properties and fertility status across the tea-growing region of Dooars, West Bengal, India

Root Foraging Strategy Improves the Adaptability of Tea Plants (Camellia sinensis L.) to Soil Potassium Heterogeneity

Role of mycorrhizas and root exudates in plant uptake of soil nutrients (calcium, iron, magnesium, and potassium): has the puzzle been completely solved?

Contact Info

Product

Resources

About