Article
Horticulture
Miguel Tamayo, Laura Sepulveda, Excequel Ponce Guequen, Pablo Saavedra, Romina Pedreschi, Alejandro Caceres-Mella, Juan E. Alvaro, Italo F. Cuneo
Summary: The classification of grapevine cultivars into isohydric and anisohydric categories depends on their ability to close stomata under conditions of low soil water availability or high atmospheric demand. This study aimed to compare the responses of Grenache, classified as isohydric, and Cabernet Sauvignon, classified as anisohydric, both grafted onto Richter 110 rootstock, and subjected to severe drought stress. The results suggest that the hydric behavior of grapevines depends on the intensity and duration of drought stress.
Article
Biochemistry & Molecular Biology
Guzel Sharipova, Ruslan Ivanov, Dmitriy Veselov, Guzel Akhiyarova, Oksana Seldimirova, Ilshat Galin, Wieland Fricke, Lidiya Vysotskaya, Guzel Kudoyarova
Summary: Stomatal closure in salt-stressed plants is related to the reduction of aquaporin abundance and hydraulic conductivity, leading to decreased transpiration and ABA accumulation. Exogenous ABA, on the other hand, decreases transpiration but increases shoot hydraulic conductivity and aquaporin abundance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Qiangqiang Zhang, Wei Tang, Zhuang Xiong, Shaobing Peng, Yong Li
Summary: Stomata in rice panicle are regulated by water and panicle photosynthesis is less sensitive to drought than leaf photosynthesis. Enhancing non-foliar green tissues' photosynthesis is beneficial for increasing crop yield.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Jose Carlos Herrera, Alberto Calderan, Gregory A. Gambetta, Enrico Peterlunger, Astrid Forneck, Paolo Sivilotti, Herve Cochard, Uri Hochberg
Summary: The study found that grapevines become increasingly tolerant to drought as the season progresses, in coordination with the decrease in leaf turgor loss point. Simulation results demonstrated that a seasonally dynamic stomatal closure threshold leads to trade-offs under different water availabilities and climatic scenarios.
Article
Plant Sciences
Erica D'Inca, Chiara Foresti, Luis Orduna, Alessandra Amato, Elodie Vandelle, Antonio Santiago, Alessandro Botton, Stefano Cazzaniga, Edoardo Bertini, Mario Pezzotti, James J. Giovannoni, Julia T. Vrebalov, Jose Tomas Matus, Giovanni Battista Tornielli, Sara Zenoni
Summary: Through transcriptomic analysis, we have identified VviNAC60 as a potential regulator of grapevine organ maturation, with the ability to induce chlorophyll degradation and anthocyanin accumulation. This finding is significant for enhancing the environmental resilience and fruit quality of grapevines.
Article
Plant Sciences
Guang-Qian Yao, Feng-Ping Li, Zheng-Fei Nie, Min-Hui Bi, Hui Jiang, Xu-Dong Liu, Yang Wei, Xiang-Wen Fang
Summary: This study investigated the response to dehydration and rehydration in four Caragana species, finding that ABA plays a different role in regulating stomatal closure and ethylene may be a key factor in affecting gas exchange recovery.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Brett T. Wolfe, Matteo Detto, Yong-Jiang Zhang, Kristina J. Anderson-Teixeira, Tim Brodribb, Adam D. Collins, Chloe Crawford, L. Turin Dickman, Kim S. Ely, Jessica Francisco, Preston D. Gurry, Haigan Hancock, Christopher T. King, Adelodun R. Majekobaje, Christian J. Mallett, Nate G. McDowell, Zachary Mendheim, Sean T. Michaletz, Daniel B. Myers, Ty J. Price, Alistair Rogers, Lawren Sack, Shawn P. Serbin, Zafar Siddiq, David Willis, Jin Wu, Joseph Zailaa, S. Joseph Wright
Summary: The partitioning of hydraulic resistance along the soil-to-leaf continuum affects transpiration in vascular plants. In trees, the contribution of leaf hydraulic resistance to total soil-to-leaf hydraulic resistance is significant and declines with tree height. Assessing leaf hydraulic resistance using field-based measurements provides a more accurate understanding of its role in tree hydrodynamics.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Francisco J. Canales, Nicolas Rispail, Omar Garcia-Tejera, Vicent Arbona, Alejandro Perez-de-Luque, Elena Prats
Summary: Drought is a significant constraint to crop productivity worldwide, and controlling plant responses to drought is complex. Different species or genotypes may employ different strategies to cope with drought, with susceptible genotypes showing rapid increases in abscisic acid leading to stomatal closure, while resistant genotypes exhibit slower increases in abscisic acid, allowing for longer transpiration periods.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Shenglan Li, Xizi Wang, Xiaojuan Liu, Andrew J. Thompson, Fulai Liu
Summary: This study explores the mechanisms by which tomato plants respond to osmotic stress and finds that elevated CO2 concentration and high endogenous ABA level can enhance the plant's resistance to osmotic stress through osmotic and hydraulic adjustments. Elevated CO2 improves water status, while high endogenous ABA compensates for the decreased root hydraulic conductance by increasing specific leaf area and root branching intensity.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Agronomy
Rongrong Guo, Ling Lin, Guiyuan Huang, Xiaofang Shi, Rongfu Wei, Jiayu Han, Sihong Zhou, Ying Zhang, Taili Xie, Xianjin Bai, Xiongjun Cao
Summary: This study used RNA-seq to investigate the transcriptional responses of heat-stressed grapevine leaves, revealing the effects of heat stress on photosynthesis and abscisic acid biosynthesis, metabolism, and signal transduction pathways.
Article
Chemistry, Multidisciplinary
Suraj Kar, Thayne Montague, Antonio Villanueva-Morales, Edward Hellman
Summary: The use of infra-red gas analyzers for measuring gas exchange in leaves allows for enhanced sample size, contributing to better characterization of growth, yield, physiology, and stress response in grapevines. The technique of measuring gas exchange in excised leaves provides similar accuracy to in situ leaves with reduced time, potentially increasing experimental sampling size by 50%. This method could address the common challenge of insufficient sample numbers in field studies on grapevine gas exchange.
APPLIED SCIENCES-BASEL
(2021)
Article
Plant Sciences
Siguang Ma, Xinpeng Zhou, Mohammad Shah Jahan, Shirong Guo, Mimi Tian, Ranran Zhou, Hongyun Liu, Bingjie Feng, Sheng Shu
Summary: The study demonstrates that putrescine (Put) regulates stomatal changes in cucumber leaves under salt stress by increasing endogenous PAs and H2O2 levels, decreasing ABA content, and promoting stomatal opening, photosynthesis, and plant growth. Inhibitors can affect this process.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Chiara Amitrano, Youssef Rouphael, Stefania De Pascale, Veronica De Micco
Summary: The coordination of leaf hydraulic-related traits with leaf size is influenced by environmental conditions and especially by VPD. Stomata and vein development show higher density at low VPD levels, indicating a coordinated response to environmental changes. Variability in stomata and vein density is observed across the leaf lamina, with more stomata but fewer veins developing in parts of the leaf exposed to light.
Article
Plant Sciences
Shenglan Li, Liang Fang, Josefine Nymark Hegelund, Fulai Liu
Summary: Elevated CO2 affects plant water use efficiency, but the response is limited under drought stress. Drought stress results in decreased leaf and root hydraulic conductance, and the increase in CO2 concentration may disrupt plant responses to drought.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Elias Hurtado-Gaitan, Susana Selles-Marchart, James Hartwell, Maria Jose Martinez-Esteso, Roque Bru-Martinez
Summary: The study found that under CD induction conditions, PPCK was down-regulated, stilbene production increased, and PPC activity was lost in both cell cultures and leaves. Additionally, STS transcripts were co-induced with MYB14 and WRKY24 in both tissues. These genes had not been previously reported to respond to CD in grape leaves.
Article
Food Science & Technology
J. D. Dunlevy, D. H. Blackmore, A. Betts, N. Jewell, C. Brien, B. Berger, R. R. Walker, E. J. Edwards, A. R. Walker
Summary: This study investigated the impact of elevated temperature on key salt tolerance traits of two contrasting rootstocks and a population of experimental rootstock hybrids. Elevated temperature led to increased chloride concentration in the mature laminae of most genotypes, likely driven by increased transpiration, with large differences between genotypes in the extent of the temperature response. Genetic differences were also observed for the influence of temperature on laminae sodium accumulation. Growth rate response to salinity was variable between genotypes and was independent of laminae chloride and sodium accumulation.
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
(2022)
Article
Remote Sensing
Shaikh Yassir Yousouf Jewan, Vinay Pagay, Lawal Billa, Stephen D. Tyerman, Deepak Gautam, Debbie Sparkes, Hui Hui Chai, Ajit Singh
Summary: This study evaluated the performance of a low-cost UAV-based remote sensing technology for predicting Bambara groundnut yield. The results showed that accumulated multi-temporal vegetation indices significantly improved yield prediction accuracy, with the best index being n-ary sumation SR and the best interval being from podfilling to maturity stages. The generated yield map provides valuable information for future site-specific or variable-rate application operations within-field spatial variations.
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2022)
Article
Food Science & Technology
Nuria Pantaleoni Reluy, Nicolas Baghdadi, Thierry Simonneau, Hassan Bazzi, Marcel El Hajj, Valentin Pret, Ghaith Amin, Emilie Daret
Summary: This study examines the feasibility of using Sentinel-2 optical remote sensing data to map the impact of heatwaves on vineyards. By comparing inter-annual and intra-annual standards of NDVI values, damaged and undamaged vineyard plots can be accurately predicted. The combination of C1 and C2 provides the most accurate detection of heatwave consequences on vineyards.
Article
Food Science & Technology
E. J. Edwards, A. Betts, P. R. Clingeleffer, R. R. Walker
Summary: The type of rootstock can affect the growth and yield of the scion by conferring specific traits. This study found that rootstock conferred vigor and crop water use index were related, and using rootstocks with low vigor can improve the water use efficiency of fruit production.
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
(2022)
Article
Food Science & Technology
R. R. Walker, D. H. Blackmore, J. D. Dunlevy, E. J. Edwards, A. R. Walker
Summary: This study aimed to understand the effect of root zone temperature on salt exclusion, growth, and stomatal conductance in Shiraz grape vines. The results showed that some rootstock genotypes exhibited enhanced shoot sodium and chloride exclusion in response to salt treatment under high root zone temperature.
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
(2022)
Correction
Plant Sciences
Matthew Gilliham, Yu Long, Stephen D. Tyerman
Article
Biochemistry & Molecular Biology
Manuel Nieves-Cordones, Farrukh Azeem, Yuchen Long, Martin Boeglin, Geoffrey Duby, Karine Mouline, Eric Hosy, Alain Vavasseur, Isabelle Cherel, Thierry Simonneau, Frederic Gaymard, Jeffrey Leung, Isabelle Gaillard, Jean-Baptiste Thibaud, Anne-Alienor Very, Arezki Boudaoud, Herve Sentenac
Summary: Gas exchange in land plants is regulated by stomata, which optimize photosynthesis and limit water vapor loss. This study reveals the mechanical contributions of epidermal cells in stomatal aperture regulation. By disrupting the Arabidopsis thaliana K+ channel subunit gene AtKC1, the researchers found that the back pressure exerted by pavement cells onto guard cells is impaired, leading to larger stomatal apertures. Potassium ion transport within the leaf epidermis plays a crucial role in stomatal functioning.
Article
Plant Sciences
Stephanie J. Watts-Williams, Stefanie Wege, Sunita A. Ramesh, Oliver Berkowitz, Bo Xu, Matthew Gilliham, James Whelan, Stephen D. Tyerman
Summary: Soil micronutrient availability, particularly zinc (Zn), is a limiting factor in crop yield. Arbuscular mycorrhizal (AM) fungi facilitate nutrient uptake in host plants through the mycorrhizal pathway. In this study, RNA-seq analysis revealed that the putative Zn transporter gene, MtZIP14, was up-regulated in Medicago truncatula roots during colonization by Rhizophagus irregularis. Loss-of-function mutant plants lacking MtZIP14 showed reduced shoot biomass when grown under low Zn concentration and colonized by AM fungi, implicating a role for MtZIP14 in plant Zn nutrition and AM colonization.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Jia W. Tan, Harshraj Shinde, Kiflu Tesfamicael, Yikang Hu, Mario Fruzangohar, Penny Tricker, Ute Baumann, Everard J. Edwards, Carlos Rodriguez M. Lopez
Summary: Through physiological and transcriptome analyses, this study identified genes and pathways associated with grapevine response to drought and/or heat stress. While some genes showed different expression under individual and combined stresses, the majority of genes were unique to the combined stress treatment. The results suggest that the effect of combined stress on physiology and gene expression is more severe than that of individual stresses, but not simply additive.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Food Science & Technology
Benjamin Tiffon-Terrade, Thierry Simonneau, Amelia Caffarra, Romain Boulord, Philippe Pechier, Nicolas Saurin, Charles Romieu, Damien Fumey, Angelique Christophe
Summary: Grapevine phenology is advancing due to global warming, which can affect yield and quality. This study investigated the use of intermittent shading to delay berry ripening. The shading delayed veraison by up to 30 days, but also resulted in decreased berry size and sugar content. Combining shading with water deficit maintained growth and sugar loading, but the effect on veraison was reduced. Shading intensity and duration should be adapted to water conditions to maximize benefits.
Article
Agronomy
Matthew J. Knowling, Rob R. Walker, Anne Pellegrino, Everard J. Edwards, Seth Westra, Cassandra Collins, Bertram Ostendorf, Bree Bennett
Summary: The potential of digital agriculture relies on mathematical models to encode 'cause-and-effect' relationships and support on-farm decision making. Irrigation decision making, particularly for woody perennial crops like grapevines, is influenced by the relationship between applied water and crop yield. Process-based models are used to represent these complex relationships in an interpretable and generalizable manner.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Biochemistry & Molecular Biology
Adrianus J. Westgeest, Myriam Dauzat, Thierry Simonneau, Florent Pantin
Summary: Monitoring diel transpiration dynamics with the PhenoLeaks pipeline revealed that leaf starch metabolism affects the timing of endogenous stomatal rhythm through an interplay between the circadian clock and sugars across tissues. Mutations in starch metabolism resulted in a phase shift and delayed stomatal movements during the daytime and decreased stomatal preopening at night. However, tissue-specific mutations showed that neither guard-cell nor mesophyll-cell starch metabolisms are strictly required for normal diel patterns of transpiration. The energetic effect of starch-derived sugars is usually nonlimiting for endogenous stomatal movements.
Article
Plant Sciences
Ricky J. Milne, Katherine E. Dibley, Jayakumar Bose, Anthony R. Ashton, Peter R. Ryan, Stephen D. Tyerman, Evans S. Lagudah
Summary: A wheat gene that provides partial resistance to multiple fungal diseases has been found to be associated with increased ion transport, which could contribute to disease resistance.
Article
Food Science & Technology
Mathilde Millan, Thierry Simonneau, Aude Coupel-Ledru, Romain Boulord, Benoit Pallas
Summary: In the context of climate change, extreme heatwaves have led to leaf and grape burning. This study investigates the genotypic variability in response to heatwaves and explores the relationship between leaf temperature and stomatal conductance and energy absorption. Measurements of functional and architectural traits were taken on a set of 33 genotypes, and heritabilities were computed to determine correlations between these traits. The study reveals that leaf temperature is not solely associated with leaf-burning symptoms and suggests the involvement of other processes.
Article
Plant Sciences
Phan Thi Thanh Hoai, Jiaen Qiu, Michael Groszmann, Annamaria De Rosa, Stephen D. Tyerman, Caitlin S. Byrt
Summary: Dynamic changes in aquaporin gene expression occur during seed germination, and AtPIP2;1 has been identified as a key player in this process. Mutants lacking functional AtPIP2;1 and/or AtPIP2;2 proteins exhibited delayed germination in saline conditions, while lines over-expressing AtPIP2;1 had reduced seed mass and increased seed K+ content. These findings suggest that AtPIP2;1 affects seed germination through water and ion transport or H2O2 signaling, and further research on aquaporin functions can provide insights into optimizing germination in sub-optimal conditions.
FUNCTIONAL PLANT BIOLOGY
(2023)