Article
Plant Sciences
Pirko Jalakas, Yohei Takahashi, Rainer Waadt, Julian I. Schroeder, Ebe Merilo
Summary: Vapour pressure deficit (VPD) is an important indicator of atmospheric drought and evaporative pressure on plants, affecting stomatal closure response. There are still many unanswered questions regarding the molecular VPD-sensing and signalling mechanisms in stomatal guard cells that require further research.
Article
Plant Sciences
Megan K. Bartlett, Gabriela Sinclair
Summary: The study found that the physiological traits of wine grape cultivars are closely related to the growing season climate. Cultivars with lower maximum stomatal conductance are associated with regions with higher temperatures and vapor pressure deficits, while those with greater stem embolism resistance and more anisohydric stomatal behavior are associated with cooler regions.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Plant Sciences
Yue Shi, Xiangning Liu, Shuangshuang Zhao, Yan Guo
Summary: Reducing transpiration aids plant survival during limited water conditions. Gene expression regulated by abscisic acid (ABA) and the activation of anion channels control stomatal closure and stress responses during drought. Additionally, actin reorganization mediated by CKL2 kinase activity further contributes to maintaining stomatal closure and fine-tunes ABA signaling in plants.
Article
Plant Sciences
Qingbin Chen, Ling Bai, Wenjing Wang, Huazhong Shi, Jose Ramon Botella, Qidi Zhan, Kang Liu, Hong-Quan Yang, Chun-Peng Song
Summary: COP1 regulates stomatal closure by promoting degradation of Clade A type PP2Cs in ABA signaling pathway, providing a new insight into the interaction between ABA and light signaling components in stomatal movement regulation.
Article
Plant Sciences
Po-Kai Hsu, Guillaume Dubeaux, Yohei Takahashi, Julian I. Schroeder
Summary: In recent years, significant progress has been made in understanding the regulatory mechanisms of ABA signal transduction, the physiological importance of basal ABA signaling in stomatal regulation, and the interactions of ABA with other stomatal signaling pathways, which provide important insights for enhancing crop drought tolerance and water-use efficiency.
Article
Plant Sciences
Yu-Jie Yang, Min-Hui Bi, Zheng-Fei Nie, Hui Jiang, Xu-Dong Liu, Xiang-Wen Fang, Timothy J. Brodribb
Summary: Seed plants have been found to increase photosynthetic WUE under water stress, while ferns maintain a steady WUE under dehydration. This difference may give seed plants a competitive advantage over ferns in drought conditions.
Article
Biodiversity Conservation
Ying Jin, Guangyou Hao, William M. Hammond, Kailiang Yu, Xiaorong Liu, Qing Ye, Zhenghu Zhou, Chuankuan Wang
Summary: The sequence of water potentials for physiological dysfunctions of woody plants varies with aridity, with xeric species adopting a more conservative sequence to prevent tissue damage and mesic species adopting a riskier sequence to maximize carbon uptake. Integrating this aridity-dependent sequence of water potentials and key traits into vegetation models would improve predictions of woody plants' response to drought under climate change.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Plant Sciences
S. A. M. McAdam, C. N. Kane, J. A. Mercado Reyes, A. A. Cardoso, T. J. Brodribb, N. K. Ruhr
Summary: This study investigates whether a significant increase in abscisic acid (ABA) levels in leaves can serve as an indicator of impending leaf death in vascular land plants. The results show that ABA levels substantially increase once leaves show signs of incipient death, possibly due to drought, freezing, or natural aging processes.
Article
Agronomy
Gonzalo J. Arata, Mailen A. Riveira-Rubin, Diego Batlla, Maria Veronica Rodriguez
Summary: This study reveals considerable intraspecific variability for dormancy attributes among cultivated sunflowers, mainly manifested in differences in dormancy expression patterns and release rates among different genotypes.
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
Agronomy
Mailen Riveira Rubin, Gonzalo Joaquin Arata, Esteban Dario Lopez, Maria Veronica Rodriguez, Diego Batlla
Summary: The study focused on the effect of varying sowing dates on sunflower genotypes' seed dormancy levels, finding that late sowings can increase germination rates and accelerate dormancy release. The sensitivity of embryos to ABA inhibition may play a role in alleviating dormancy in sunflower seeds.
Article
Biochemistry & Molecular Biology
Zi-Dan Zhu, Hai-Jing Sun, Jiao Li, Ya-Xin Yuan, Jun-Feng Zhao, Chun-Guang Zhang, Yu-Ling Chen
Summary: Research has shown that RIC7 overexpression negatively regulates ABA-induced stomatal closure and affects H2O2 generation in guard cells, indicating an interdependency between RIC7 and H2O2 in ABA guard-cell signaling.
PLANT SIGNALING & BEHAVIOR
(2021)
Article
Plant Sciences
Mariana Antonietta, Matias de Felipe, Shane A. Rothwell, Tom B. Williams, Patrick Skilleter, Alfonso Albacete, Lucas Borras, Mariana C. Rufino, Ian C. Dodd
Summary: Chilling can reduce the sensitivity of stomata to the hormone abscisic acid (ABA) in legumes. However, the mechanisms involved in this process are not clear. Through experiments, it was found that prolonged chilling decreased leaf water content but increased leaf ethylene evolution and concentrations of ethylene precursor and hormones like ABA and jasmonic acid. Stomatal conductance was found to decrease with foliar ABA accumulation, and the application of an ethylene antagonist partially reversed the excessive stomatal opening caused by chilling.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Biochemistry & Molecular Biology
Hui Liu, Songbo Song, Mengyao Liu, Yangwei Mu, Ying Li, Yuxin Xuan, Liangjie Niu, Hui Zhang, Wei Wang
Summary: In this study, an NAC transcription factor ZmNAC20 was identified and found to regulate drought stress response in maize. Overexpression of ZmNAC20 improved drought resistance in maize by promoting stomatal closure and activating the expression of stress-responsible genes. These findings provide valuable insights and new clues for improving crop drought resistance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Hui Liu, Songbo Song, Hui Zhang, Yanhua Li, Liangjie Niu, Jinghua Zhang, Wei Wang
Summary: Drought is a global threat that affects agricultural production. Plants have evolved several adaptive strategies to cope with drought, among which stomatal closure is a critical mechanism. Abscisic acid, reactive oxygen species, and calcium ion play pivotal roles in controlling stomatal closure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Radiology, Nuclear Medicine & Medical Imaging
Tobias Baeuerle, Marc Saake, Michael Uder
Summary: Radiologists have extensive experience with gadolinium-based contrast agents in MRI, with data on adverse effects available in large collectives. Allergic reactions and NSF are rare, and macrocyclic GBCA can help reduce gadolinium retention in the brain.
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
(2021)
Article
Endocrinology & Metabolism
Henrik Heinen, Lisa Seyler, Vanessa Popp, Konstantin Hellwig, Aline Bozec, Michael Uder, Stephan Ellmann, Tobias Baeuerle
Summary: This study establishes a novel methodology using experimental ultrasound techniques to assess the morphological, functional, and molecular features of breast cancer bone metastases, compared with magnetic resonance imaging and histological analysis. The results show that ultrasound techniques can effectively characterize osteolytic lesions and that molecular ultrasound allows for the non-invasive assessment of increased VEGFR2 expression in skeletal lesions.
Article
Dentistry, Oral Surgery & Medicine
Agnes Schroeder, Lisa Seyler, Elisabeth Hofmann, Lina Goelz, Jonathan Jantsch, Peter Proff, Tobias Baeuerle, Christian Kirschneck
Summary: The study demonstrated that molecular magnetic resonance imaging can be used to observe the expression of vascular endothelial growth factor receptor-2 (VEGFR-2) in tension areas of the periodontal ligament during orthodontic tooth movement. The results showed that orthodontic forces lead to increased uptake of the VEGFR-2-specific MRI contrast agent in tension areas of the periodontal ligament.
JOURNAL OF OROFACIAL ORTHOPEDICS-FORTSCHRITTE DER KIEFERORTHOPADIE
(2022)
Article
Agronomy
Juana Munoz-Ucros, Roland C. Wilhelm, Daniel H. Buckley, Taryn L. Bauerle
Summary: The study found that plants are affected by the legacy effects of drought on the rhizosphere microbiome. This drought legacy was propagated and persisted throughout nine weeks of plant growth, independent of prevailing water stress. Drought-impacted rhizospheres had larger populations of desiccation-tolerant and putatively endophytic taxa with established plant growth promoting capabilities.
Article
Plant Sciences
Melanie Brunn, Benjamin D. Hafner, Marie J. Zwetsloot, Fabian Weikl, Karin Pritsch, Kyohsuke Hikino, Nadine K. Ruehr, Emma J. Sayer, Taryn L. Bauerle
Summary: Drought-stressed trees increase the exudation of carbon via their roots, which helps them adapt to drought and maintain ecosystem functions. Despite reduced carbon assimilation, the exudation from the roots remains constant, and trees allocate more carbon to root exudates.
Article
Biodiversity Conservation
Kyohsuke Hikino, Jasmin Danzberger, Vincent P. Riedel, Benjamin D. Hesse, Benjamin D. Hafner, Timo Gebhardt, Romy Rehschuh, Nadine K. Ruehr, Melanie Brunn, Taryn L. Bauerle, Simon M. Landhaeusser, Marco M. Lehmann, Thomas Roetzer, Hans Pretzsch, Franz Buegger, Fabian Weikl, Karin Pritsch, Thorsten E. E. Grams
Summary: During the recovery process after drought release, the allocation of recent photoassimilates (C-new) and stored carbon (C) plays a crucial role in the regeneration of the fine-root system and the associated water uptake capacity.
GLOBAL CHANGE BIOLOGY
(2022)
Editorial Material
Plant Sciences
Hiroyuki Koyama, Chao-Feng Huang, Miguel A. Pineros, Yoko Yamamoto
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Annika E. Huber, Peter J. Melcher, Taryn L. Bauerle
Summary: This study investigates the relationship between the hydraulic status of roots, stems, and leaves and stomatal conductance, and finds that drought-induced stomatal closure occurs before the occurrence of vessel embolism and turgor loss in leaves.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Luz S. Barrero, Matthew R. Willmann, Eric J. Craft, Kazi M. Akther, Sandra E. Harrington, Gina A. Garzon-Martinez, Raymond P. Glahn, Miguel A. Pineros, Susan R. McCouch
Summary: In this study, two upland rice cultivars tolerant to abiotic stress were selected for analyzing allelic variation in their genomes. Two genes, SUB1A and SPDT, were identified as candidate targets for gene editing. Through gene editing techniques, a deletion in the SPDT gene was designed, and ongoing plant transformation experiments aim to improve phosphorus utilization efficiency in upland rice grown in acidic soils.
Article
Biochemistry & Molecular Biology
Ju-Chen Chia, Jiapei Yan, Maryam Rahmati Ishka, Marta Marie Faulkner, Eli Simons, Rong Huang, Louisa Smieska, Arthur Woll, Ryan Tappero, Andrew Kiss, Chen Jiao, Zhangjun Fei, Leon Kochian, Elsbeth Walker, Miguel Pineros, Olena K. Vatamaniuk
Summary: Arabidopsis OPT3 transports Cu and Fe into phloem companion cells and plays a role in systemic signaling of Cu and Fe deficiencies.
Article
Plant Sciences
Nathan J. Scinto-Madonich, Shivranjani Baruah, Sameya Young, Katherine Vignona, Andrew C. Read, Sara C. D. Carpenter, Li Wang, Xinying Shi, Geoffrey Chang, Miguel A. Pineros, Adam J. Bogdanove
Summary: The type III secreted transcription activator-like effector Tal2g of the rice bacterial leaf streak (BLS) pathogen Xanthomonas oryzae pv. oryzicola promotes lesion development and bacterial exudation through stomata by upregulating a putative sulfate transporter gene in rice, OsSULTR3;6. The transport mechanics, subcellular localization, potential substrates, and phenotyping of OsSULTR3;6 knockout lines generated by genome editing are being characterized to understand its role in BLS disease development.
PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY
(2023)
Article
Plant Sciences
Laura Dougherty, Ewa Borejsza-Wysocka, Alexandre Miaule, Ping Wang, Desen Zheng, Michael Jansen, Susan Brown, Miguel Pineros, Christopher Dardick, Kenong Xu
Summary: Plant architecture plays a crucial role in determining crop yield potential and productivity. A study on apple trees identified MdLAZY1A as the genetic determinant responsible for weeping growth, and a specific mutation in this gene was found to dominantly control the weeping phenotype. This finding provides insights into genetic control of apple tree architecture and potential targets for improving tree structure in other crops.
Editorial Material
Food Science & Technology
Miguel A. Pineros, Nathan J. Scinto-Madonich
Summary: Studying the interactions between the soil microbiome and plants can aid in designing synthetic bacterial communities to improve plant growth on marginal soils.