Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/nph.16542 |
Differences in grapevine rootstock sensitivity and recovery from drought are linked to fine root cortical lacunae and root tip function | |
Cuneo, Italo F.1; Barrios-Masias, Felipe2; Knipfer, Thorsten3; Uretsky, Jake3; Reyes, Clarissa3; Lenain, Pierre3; Brodersen, Craig R.4; Walker, M. Andrew3; McElrone, Andrew J.3,5 | |
通讯作者 | Cuneo, Italo F. ; McElrone, Andrew J. |
来源期刊 | NEW PHYTOLOGIST |
ISSN | 0028-646X |
EISSN | 1469-8137 |
出版年 | 2021 |
卷号 | 229期号:1页码:272-283 |
英文摘要 | Structural changes during severe drought stress greatly modify the hydraulic properties of fine roots. Yet, the physiological basis behind the restoration of fine root water uptake capacity during water recovery remains unknown. Using neutron radiography (NR), X-ray micro-computed tomography (micro-CT), fluorescence microscopy, and fine root hydraulic conductivity measurements (Lp(r)), we examined how drought-induced changes in anatomy and hydraulic properties of contrasting grapevine rootstocks are coupled with fine root growth dynamics during drought and return of soil moisture. Lacunae formation in drought-stressed fine roots was associated with a significant decrease in fine root Lp(r) for both rootstocks. However, lacunae formation occurred under milder stress in the drought-resistant rootstock, 110R. Suberin was deposited at an earlier developmental stage in fine roots of 101-14Mgt (i.e. drought susceptible), probably limiting cortical lacunae formation during mild stress. During recovery, we found that only 110R fine roots showed rapid re-establishment of elongation and water uptake capacity and we found that soil water status surrounding root tips differed between rootstocks as imaged with NR. These data suggest that drought resistance in grapevine rootstocks is associated with rapid re-establishment of growth and Lp(r) near the root tip upon re-watering by limiting competing sites along the root cylinder. |
英文关键词 | cortical lacunae drought stress Lp(r) recovery root growth suberin deposition |
类型 | Article |
语种 | 英语 |
国家 | Chile ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000526636300001 |
WOS关键词 | WATER-UPTAKE ; HYDRAULIC CONDUCTIVITY ; ARABIDOPSIS-THALIANA ; EMBOLISM REPAIR ; AGAVE-DESERTI ; DYNAMICS ; PLANT ; TRANSPORT ; GROWTH ; AQUAPORINS |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | University of California, Davis |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/315234 |
作者单位 | 1.Pontificia Univ Catolica Valparaiso, Dept Agr & Food Sci, Valparaiso 2340025, Chile; 2.Univ Nevada, Dept Agr Vet & Rangeland Sci, Reno, NV 89557 USA; 3.Univ Calif Davis, Dept Viticulture & Enol, Davis, CA 95618 USA; 4.Yale Univ, Sch Forestry & Environm Studies, New Haven, CT 06511 USA; 5.USDA ARS, Crops Pathol & Genet Res Unit, Davis, CA 95618 USA |
推荐引用方式 GB/T 7714 | Cuneo, Italo F.,Barrios-Masias, Felipe,Knipfer, Thorsten,et al. Differences in grapevine rootstock sensitivity and recovery from drought are linked to fine root cortical lacunae and root tip function[J]. University of California, Davis,2021,229(1):272-283. |
APA | Cuneo, Italo F..,Barrios-Masias, Felipe.,Knipfer, Thorsten.,Uretsky, Jake.,Reyes, Clarissa.,...&McElrone, Andrew J..(2021).Differences in grapevine rootstock sensitivity and recovery from drought are linked to fine root cortical lacunae and root tip function.NEW PHYTOLOGIST,229(1),272-283. |
MLA | Cuneo, Italo F.,et al."Differences in grapevine rootstock sensitivity and recovery from drought are linked to fine root cortical lacunae and root tip function".NEW PHYTOLOGIST 229.1(2021):272-283. |
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