Journal ArticleDOI
Hydraulic redistribution in Citrus rootstocks under drought
Marcela Trevenzoli Miranda,Simone Ferreira da Silva,Bárbara Baêsso Moura,Adriana Hissae Hayashi,Eduardo Caruso Machado,Rafael Vasconcelos Ribeiro +5 more
TLDR
In this article, the ability of Citrus roots to redistribute water is genotype-dependent and may be an important physiological mechanism associated with drought tolerance in Citrus rootstocks.Abstract:
Hydraulic redistribution could contribute significantly to plant water balance under limiting conditions, reducing plant sensitivity to drought. We hypothesized that citrus species are able to redistribute water under drought, transporting water from a wet to a dry portion of root system. Using an unusual experimental design, ‘Rangpur’ lime and ‘Swingle’ citrumelo rootstocks were inarched into Valencia sweet orange trunk and subjected to water withholding. In a split root system, each plant was composed by two rootstocks, isolated from each other. During water deficit, only one rootstock faced low water availability while the other remained well watered. Sap flow, leaf water potential and soil moisture were monitored for 42 days. We found reserve sap flow in both rootstocks, with water being transported from the irrigated rootstock to the non-irrigated one. Nocturnal sap flow of well-watered rootstocks revealed that water redistribution continued at night, with ‘Rangpur’ lime showing higher hydraulic redistribution than ‘Swingle’ citrumelo. The ability of Citrus roots to redistribute water is genotype-dependent and may be an important physiological mechanism associated with drought tolerance in Citrus rootstocks.read more
Citations
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Journal ArticleDOI
Root Osmotic Adjustment and Stomatal Control of Leaf Gas Exchange are Dependent on Citrus Rootstocks Under Water Deficit
Marcela T. Miranda,Marcela T. Miranda,Simone Faria Silva,Neidiquele M. Silveira,Luciano Pereira,Luciano Pereira,Eduardo Caruso Machado,Rafael Vasconcelos Ribeiro +7 more
TL;DR: It is found that root hydraulic redistribution, osmotic adjustment and stomatal control of leaf gas exchange are important physiological mechanisms associated with drought tolerance induced by Rangpur lime rootstock.
Journal ArticleDOI
Drought resistance in Harumi tangor seedlings grafted onto different rootstocks.
Tiantian Dong,Xi Lijuan,Bo Xiong,Qiu Xia,Huang Shengjia,Wenxin Xu,Jiaqi Wang,Bozhi Wang,Yuan Yao,Changwen Duan,Xiaoyu Tang,Sun Guochao,Xun Wang,Honghong Deng,Zhihui Wang +14 more
TL;DR: In this paper, the influence of drought stress on the leaf morphological characteristics, osmotic adjustment substances, antioxidant enzymes, and resistance-related photosynthetic physiological indices of Harumi tangor plants grafted onto Poncirus trifoliata (Pt), Citrus junos (Cj), and Citrus tangerine (Ct).
Journal ArticleDOI
Water stress signaling and hydraulic traits in three congeneric citrus species under water deficit.
Marcela Trevenzoli Miranda,Erick Espinoza-Nunez,Simone Faria Silva,Luciano Pereira,Adriana Hissae Hayashi,Raquel L. Boscariol-Camargo,Sérgio Alves de Carvalho,Eduardo Caruso Machado,Rafael Vasconcelos Ribeiro +8 more
TL;DR: In this paper , chemical signaling through ABA and anatomical, hydraulic, and physiological traits were evaluated in saplings of Rangpur lime, Swingle citrumelo and Valencia sweet orange.
Journal ArticleDOI
Transcriptome and Physiological Analyses of a Navel Orange Mutant with Improved Drought Tolerance and Water Use Efficiency Caused by Increases of Cuticular Wax Accumulation and ROS Scavenging Capacity
Beibei Liang,Shiguo Wan,Qingling Ma,Li Yang,Weicong Hu,Liuqing Kuang,J. Xie,Dechun Liu,Yong Liu +8 more
TL;DR: In this paper , the authors showed that significant increases in the amounts of total waxes and aliphatic wax compounds, including n-alkanes, n-primary alcohols and n-aldehydes, led to the decrease in cuticular permeability and finally resulted in the improvements in drought tolerance and water use efficiency.
Posted ContentDOI
Metabolic profiling of drought tolerance: revealing how citrus rootstocks modulate plant metabolism under varying water availability
Simone Faria Silva,Marcela Trevenzoli Miranda,Camila P. Cunha,Adilson P. Domingues-Jr,Juliana Aparecida Aricetti,Camila Caldana,Eduardo Caruso Machado,Rafael Vasconcelos Ribeiro +7 more
TL;DR: In this article , the authors present a comprehensive spatio-temporal evaluation of citrus responses to drought and highlight the metabolic adjustments associated with drought tolerance induced by Rangpur lime rootstock.
References
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Journal ArticleDOI
Hydraulic lift: consequences of water efflux from the roots of plants.
TL;DR: A review of laboratory and field evidence supporting hydraulic lift can be found in this paper, where the authors discuss some of the consequences of this below-ground behavior for the ecology of plants.
Journal ArticleDOI
Hydraulic lift and water use by plants: implications for water balance, performance and plant-plant interactions.
TL;DR: Hydraulic lift need not only occur in arid or semi-arid environments where chronic water deficits prevail, but can be important in relatively mesic environments when subjected to periodic soil water deficits, that plants neighboring trees which conduct hydraulic lift can use a significant proportion of this water source, and that the HLW source can effectively ameliorate the influence of drought on the performance and growth of neighboring vegetation.
Journal ArticleDOI
An improved heat pulse method to measure low and reverse rates of sap flow in woody plants.
Stephen Burgess,Mark A. Adams,Neil C. Turner,Craig R. Beverly,C. K. Ong,Ahmed A. H. Khan,Timothy M. Bleby +6 more
TL;DR: An improved heat pulse method, termed the heat ratio method (HRM), is presented, to measure low and reverse rates of sap flow in woody plants, which has several important advantages over the CHPM, including improved measurement range and resolution.
Journal ArticleDOI
The redistribution of soil water by tree root systems.
TL;DR: It is suggested that “hydraulic redistribution” of water in tree roots is significant in maintaining root viability, facilitating root growth in dry soils and modifying resource availability.
Journal ArticleDOI
Sensitivity of growth of roots versus leaves to water stress: biophysical analysis and relation to water transport
Theodore C. Hsiao,Liukang Xu +1 more
TL;DR: A combination of transport and changes in growth parameters is proposed as the mechanism co-ordinating the growth of the two organs under conditions of soil moisture depletion.