A High Internal Phosphorus Use Efficiency in Tea (Camellia sinensis L.) Plants

Salehi, S.; Hajiboland, Roghieh

doi:10.3923/ajps.2008.30.36

Cited by 35 publications

(36 citation statements)

References 18 publications

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“…In a greenhouse study, it has been observed that the tea plant is a species extremely tolerant to P deficiency and that the P requirement for an optimum growth is as low as 50 µM in a hydroponic medium, which is much less than the P requirement for optimum growth for many other crop species (Salehi and Hajiboland 2008). A high internal use efficiency (Salehi and Hajiboland 2008) that is attributable at least partly to a high rate of re-translocation of P from mature to young growing leaves (Hajiboland and Salehi 2014) is the main mechanism responsible for the low P requirement in tea.…”

Section: Phosphorousmentioning

confidence: 99%

Environmental and nutritional requirements for tea cultivation

Hajiboland

2017

Folia Horticulturae

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Tea (Camellia sinensis) is an important beverage crop cultivated in the tropics and subtropics under acid soil conditions. Increased awareness of the health-promoting properties of the tea beverage has led to an increase in its level of consumption over the last decades. Tea production contributes significantly to the economy of several tea-cultivating countries in Asia and Africa. Environmental constrains, particularly water deficiency due to inadequate and/or poorly distributed rainfall, seriously limit tea production in the majority of tea-producing countries. It is also predicted that global climate change will have a considerable adverse impact on tea production in the near future. Application of fertilizers for higher production and increased quality and quantity of tea is a common agricultural practice, but due to its environmental consequences, such as groundwater pollution, the rate of fertilizer application needs to be reconsidered. Cultivation of tea under humid conditions renders it highly susceptible to pathogens and pest attacks. Application of pesticides and fungicides adversely affects the quality of tea and increases health risks of the tea beverage. Organic cultivation as an agricultural practice without using synthetic fertilizers and other chemical additives such as pesticides and fungicides is a sustainable and eco-friendly approach to producing healthy tea. A growing number of tea-producing countries are joining organic tea cultivation programmes in order to improve the quality and to maintain the health benefits of the tea produced.Ke y wor d s: aluminium, global climate change, nitrogen fertilizers, organic culture, phosphorus fertilizers, soil pH, water deficiency Abbreviations: C a -atmospheric CO 2 concentration, T a -atmospheric temperature, ESTs -estimated sequence tags, N sh -harvestable shoot density, W sh -harvestable shoot weight, C i -intracellular CO 2 concentration, T l -leaf temperature, P max -maximum photosynthetic rate, T m -maximum temperature, P n -net photosynthetic rate, T o -optimum temperature, PAR -photosynthetic active radiation, ROS -reactive oxygen species, SER -shoot extension rate, SRC -shoot replacement cycle, T s -soil temperature, SWD -soil water deficit, g s -stomatal conductance, SSH technique -suppression subtractive hybridization technique, T t -threshold temperature, TE -transpiration efficiency, VPD -vapour pressure deficit, WUE -water use efficiency

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Section: Phosphorousmentioning

confidence: 99%

Environmental and nutritional requirements for tea cultivation

Hajiboland

2017

Folia Horticulturae

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“…P fertilizer can immediately promote the growth of plants and alleviate Al-induced inhibition of plant growth (Konishi et al 1985;Jiang et al 2009). The effects of Al toxicity or low P on growth and photosynthesis of many plants have been studied (Guo et al 2002(Guo et al , 2003Chen et al 2005;Jiang et al 2008;Salehi and Hajiboland 2008), but few of oil tea. Moreover, Al toxicity and low P are almost investigated separately as independent factors (Liao et al 2006;Jiang et al 2009), and most of the results came from solution cultures.…”

Section: Introductionmentioning

confidence: 98%

Effect of aluminum toxicity and phosphorus deficiency on the growth and photosynthesis of oil tea (Camellia oleifera Abel.) seedlings in acidic red soils

Zhang

et al. 2010

Acta Physiol Plant

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Wild and cultivated varieties of Camellia oleifera Abel. were studied for the response of their photosynthetic apparatus to Al toxicity and low-P stress in pot experiments with medium of acidic red soil. The effect was measured using physiological processes (growth, photosynthesis, chlorophyll a fluorescence), and pigment contents. The results showed that Al toxicity and low-P stress affected the seedlings' growth and leaves' photosynthesis, and the differences could be found between the two varieties. Lime plus P fertilizer treatment led to higher increase in the net photosynthetic rate (Pn) in the cultivar than in the wild variety. Pn increase was positively related to the increase of stomatal conductance (gs) and negatively correlated to intercellular CO 2 concentration (Ci) in both varieties. The maximum PSII quantum yield (Fv/Fm), the efficiency of excitation energy capture by open PSII reaction centers (Fv'/Fm'), the photochemical quenching (qP) and the efficiency of open PSII centers (U PSII ) significantly increased almost in all the treatment groups of both varieties, with the exception of an insignificant change in qP value for P 1 Al 1 group of cultivar. The insensitive qP and lower Pn for cultivar indicate a higher photosynthetic efficiency for the wild variety, though the U PSII was not significant between the two varieties. The pigment contents of oil tea seedlings under treatments changed significantly when lime and P were added, especially the Car/Chl ratio, suggesting carotenoid plays the role of photoprotection under high-Al and low-P stresses.Keywords Camellia oleifera Abel Á Acidic red soil Á Al toxicity Á P deficiency Á Photosynthesis Á Chlorophyll a fluorescence Abbreviations Al Aluminum P Phosphorus DW Dry weight Chl Chlorophyll Car Carotenoid Pn Net photosynthetic rate Ci Intracellular CO 2 concentration Gs Stomatal conductance PSII Photosystem II Fo, Fm, Fv Minimal, maximal and variable fluorescence yields Fm 0 , Fv 0 , Fs Maximal, variable and steady-state fluorescence yield in a light-adapted state Fv/Fm The maximal photochemical efficiency of PSII Fv 0 /Fm 0 The efficiency of excitation energy capture by open PSII reaction centre PPFD

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“…It is, therefore, an ideal species for studying P deficiency adaptation of higher plants. Although a few studies have investigated the effects of P deficiency on tea growth, P uptake and utilization, and photosynthesis (Lin et al, 2009;Salehi and Hajiboland, 2008), very little is known about the effects of P deficiency on root release of OA anions, root and leaf OA metabolism. In fact, research work on mineral nutrition of tea is rare (Salehi and Hajiboland, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…It is considered to have a high tolerance to P deficiency due to high internal P use efficiency (Salehi and Hajiboland, 2008). It is, therefore, an ideal species for studying P deficiency adaptation of higher plants.…”

Section: Introductionmentioning

confidence: 99%