磷铝互作对茶树根系生长及有机酸分泌的影响

doi:10.13305/j.cnki.jts.2022.06.006

摘要/Abstract

摘要： 为探究磷铝互作对茶树生长的影响,设置了3个铝浓度以及5个磷浓度进行磷铝交互处理,分析茶树根系生长、有机酸分泌以及磷铝元素吸收的变化。结果表明,低磷（0.01 mmol∙L^-1）或高铝（1 mmol∙L^-1）均能显著促进茶树新根生长,且低磷高铝共同处理下茶树新根根尖数、根长、平均直径及干物质增加量均达到最大值;高铝能够使高磷（0.5 mmol∙L^-1）条件下受阻的新根恢复生长;除高磷处理外,提高环境中的磷铝浓度能够显著促进另一元素在茶树根部的积累。一定范围内磷能够显著促进铝在嫩叶中的积累;但磷充足时（>0.05 mmol∙L^-1）铝却会抑制磷在嫩叶中的积累。在磷充足时,提高铝浓度均能促进草酸、苹果酸、柠檬酸的分泌;提高磷浓度能促进柠檬酸的分泌,低磷能促进草酸和苹果酸的分泌,且低磷高铝协同促进苹果酸的分泌。双因素方差分析结果表明,磷、铝浓度及其交互作用对茶树新根的根长、根尖数、磷铝吸收及有机酸分泌均有极显著影响（P<0.01）,可见磷铝互作能够显著影响茶树根系生长及有机酸分泌。

关键词: 茶树, 根系, 磷铝互作, 有机酸分泌

Abstract: To investigate the effects of phosphorus-aluminum interaction on the growth of tea plants, phosphorus and aluminum interaction treatments with three aluminum concentrations and five phosphorus concentrations were set to analyze the changes in root growth, secretion of organic acids and uptake of phosphorus and aluminum in tea plants. The results show that both low phosphorus (0.01 mmol∙L^-1) and high aluminum (1 mmol∙L^-1) significantly promoted the growth of new roots in tea plants, and the number of root tips, root length, average diameter and increase of dry matter in new roots reached the maximum under the combined treatment of low phosphorus and high aluminum. High aluminum was able to restore the growth of new roots impeded by high phosphorus (0.5 mmol∙L^-1) conditions. In addition to the high phosphorus treatment (0.5 mmol∙L^-1), increasing the concentration of phosphorus or aluminum in the environment could significantly promote their accumulation in the roots of tea plants. Within a certain range, phosphorus significantly promoted the accumulation of aluminum in shoots. However, aluminum inhibited the accumulation of phosphorus in shoots when phosphorus was sufficient (>0.05 mmol∙L^-1). When phosphorus was sufficient, high aluminum promoted the secretion of oxalic acid, malic acid and citric acid. Phosphorus application promoted the secretion of citric acid, while low phosphorus promoted the secretion of oxalic acid and malic acid. Low phosphorus and high aluminum synergistically promoted the secretion of malic acid. The results of two-way ANOVA show that phosphorus and aluminum concentrations and their interaction had highly significant effects on root length, root tip number, phosphorus and aluminum uptake and organic acid secretion in tea plants (p<0.01), which showed that phosphorus and aluminum interaction can affect root growth and organic acid secretion of tea plants significantly.

Key words: tea plant, root, phosphorus and aluminum interaction, organic acid secretion

中图分类号:

S571.1

周贝妮, 梅慧玲, 李建杰, 陈伶俐, 衷青, 李小倩, 陈暄, 黎星辉. 磷铝互作对茶树根系生长及有机酸分泌的影响[J]. 茶叶科学, 2022, 42(6): 819-827. doi: 10.13305/j.cnki.jts.2022.06.006.

ZHOU Beini, MEI Huiling, LI Jianjie, CHEN Lingli, ZHONG Qing, LI Xiaoqian, CHEN Xuan, LI Xinghui. Root Growth and Organic Acid Secretion of Tea Plants Affected by Phosphorus and Aluminum Interaction[J]. Journal of Tea Science, 2022, 42(6): 819-827. doi: 10.13305/j.cnki.jts.2022.06.006.

参考文献

[1] Tyagi W, Yumnam J S, Sen D, et al.Root transcriptome reveals efficient cell signaling and energy conservation key to aluminum toxicity tolerance in acidic soil adapted rice genotype[J]. Scientific Reports, 2020, 10(1): 4580. doi: 10.1038/s41598-020-61305-7.
[2] Singh S, Tripathi D K, Singh S, et al.Toxicity of aluminium on various levels of plant cells and organism: a review[J]. Environmental and Experimental Botany, 2017, 137: 177-193.
[3] Kopittke P M, Menzies N W, Wang P, et al.Kinetics and nature of aluminiumrhizotoxic effects: a review[J]. Journal of Experimental Botany, 2016, 67(15): 4451-4467.
[4] Sjogren C A, Larsen P B.SUV2, which encodes an ATR-related cell cycle checkpoint and putative plant ATRIP, is required for aluminium-dependent root growth inhibition in Arabidopsis[J]. Plant, Cell & Environment, 2017, 40(9): 1849-1860.
[5] Sun L, Zhang M, Liu X, et al.Aluminium is essential for root growth and development of tea plants (Camellia sinensis )[J]. Journal of Integrative Plant Biology, 2020, 62(7): 984-997.
[6] Fan K, Wang M, Gao Y, et al.Transcriptomic and ionomic analysis provides new insight into the beneficial effect of Al on tea roots’ growth and nutrient uptake[J]. Plant Cell Reports, 2019, 38(6): 715-729.
[7] Li Y, Huang J, Song X, et al.An RNA-Seq transcriptome analysis revealing novel insights into aluminum tolerance and accumulation in tea plant[J]. Planta, 2017, 246(1): 91-103.
[8] Ghanati F, Morita A, Yokota H.Effects of aluminum on the growth of tea plant and activation of antioxidant system[J]. Plant and Soil, 2005, 276(1/2): 133-141.
[9] 刘腾腾, 郜红建, 宛晓春, 等. 铝对茶树根细胞膜透性和根系分泌有机酸的影响[J]. 茶叶科学, 2011, 31(5): 458-462.
Liu T T, Gao H J, Wan X C, et al.Impacts of aluminum on root cell membrane permeability and organic acids in root exudates of tea plant[J]. Journal of Tea Science, 2011, 31(5): 458-462.
[10] Yang T Y, Qi Y P, Huang H Y, et al.Interactive effects of pH and aluminum on the secretion of organic acid anions by roots and related metabolic factors in Citrus sinensis roots and leaves[J]. Environmental Pollution, 2020, 262: 114303. doi: 10.1016/j.envpol.2020.114303.
[11] Vance C P, Uhde-Stone C, Allan D L.Phosphorus acquisition and use: critical adaptations by plants for securing a nonrenewable resource[J]. New Phytologist, 2003, 157(3): 423-447.
[12] Hinsinger P.Bioavailability of soil inorganic P in the rhizosphere as affected by root-induced chemical changes: a review[J]. Plant & Soil, 2001, 237(2): 173-195.
[13] Wang H, Xu R K, Wang N, et al.Soil acidification of alfisols as influenced by tea cultivation in eastern China[J]. Pedosphere, 2010, 20(6): 799-806.
[14] 倪康, 廖万有, 伊晓云, 等. 我国茶园施肥现状与减施潜力分析[J]. 植物营养与肥料学报, 2019, 25(3): 421-432.
Ni K, Liao W Y, Yi X Y, et al.Fertilization status and reduction potential in tea gardens of China[J]. Journal of Plant Nutrition and Fertilizer, 2019, 25(3): 421-432.
[15] Yan P, Shen C, Fan L, et al.Tea planting affects soil acidification and nitrogen and phosphorus distribution in soil[J]. Agriculture, Ecosystems & Environment, 2018, 254: 20-25. doi: 10.1016/j.apsoil.2022.104661.
[16] 阮宇成, 陈瑞锋. 铝磷对茶树生长及养分吸收的影响[J]. 中国茶叶, 1986, 8(1): 2-5.
Ruan Y C, Chen R F.Effects of aluminum and phosphorus on growth and nutrient absorption of tea plant[J]. China Tea, 1986, 8(1): 2-5.
[17] Wan Q, Xu R K, Li X H.Proton release by tea plant (Camellia sinensis L.) roots as affected by nutrient solution concentration and pH[J]. Plant, Soil and Environment, 2012, 58(9): 429-434.
[18] Chen R F, Shen R F, Gu P, et al.Response of rice (Oryza sativa ) with root surface iron plaque under aluminium stress[J]. Annals of Botany, 2006, 98(2): 389-395.
[19] 庞鑫, 王玉花, 王伟东, 等. 修剪物与茶多酚对茶树矿质吸收及根系有机酸分泌的影响[J]. 茶叶科学, 2014, 34(6): 591-600.
Pang X, Wang Y H, Wang W D, et al.Effects of tea pruning materials and tea polyphenols on organic acids secretion and mineral uptake in tea plant[J]. Journal of Tea Science, 2014, 34(6): 591-600.
[20] Mora M, Demanet R, Acuña J J, et al.Aluminum-tolerant bacteria improve the plant growth and phosphorus content in ryegrass grown in a volcanic soil amended with cattle dung manure[J]. Applied Soil Ecology, 2017, 115: 19-26.
[21] Liang C, Piñeros M A, Tian J, et al.Low pH, aluminum, and phosphorus coordinately regulate malate exudation through GmALMT1 to improve soybean adaptation to acid soils[J]. Plant Physiology, 2013, 161(3): 1347-1361.
[22] Balzergue C, Dartevelle T, Godon C, et al.Low phosphate activates STOP1-ALMT1 to rapidly inhibit root cell elongation[J]. Nature Communications, 2017, 8(1): 15300. doi: 10.1038/ncomms15300.
[23] Xu Q, Wang Y, Ding Z, et al.Aluminum induced metabolic responses in two tea cultivars[J]. Plant Physiology and Biochemistry, 2016, 101: 162-172.
[24] Zheng S J, Yang J L, He Y F, et al.Immobilization of aluminum with phosphorus in roots is associated with high aluminum resistance in buckwheat[J]. Plant Physiology, 2005, 138(1): 297-303.
[25] Chamuah G S.The effect of nitrogen on root growth and nutrient uptake of young tea plants (Camellia sinensis L.) grown in sand culture[J]. Fertilizer Research, 1988, 16(1): 59-65.
[26] Konishi S, Miyamoto S, Taki T.Stimulatory effects of aluminum on tea plants grown under low and high phosphorus supply[J]. Soil Science and Plant Nutrition, 1985, 31(3): 361-368.
[27] Qu X, Zhou J, Masabni J, et al.Phosphorus relieves aluminum toxicity in oil tea seedlings by regulating the metabolic profiling in the roots[J]. Plant Physiology and Biochemistry, 2020, 152: 12-22.