Article
Physiology
Armin Just, Robert T. Mallmann, Sonja Grossmann, Faten Sleman, Norbert Klugbauer
Summary: Two-pore channels (TPCs) are a type of cation channels found in endo-lysosomal compartments. They are important for regulating Ca2+-mediated vesicular membrane fusion and endo-lysosomal vesicle trafficking. This study investigated the localization of TPC1 in the kidney and its role in the dynamic regulation of tubular transport.
Article
Agronomy
Lijuan Zhao, Shengnan Li, Qingyang Yu, Chunxue Zhang, Liumin Wang, Yichen Jiang, Zedong Wu, Zhi Pi
Summary: This study investigated the effects of vernalization on phytohormone levels and gene expression. The results showed that vernalization significantly changed the levels of abscisic acid (ABA), jasmonic acid (JA), and gibberellic acid (GA). Vernalization inhibited ABA and JA signaling, but promoted GA signaling. Additionally, exogenous ABA and MeJA delayed GA-induced bolting.
Article
Forestry
Tingting Sun, Junke Zhang, Qiang Zhang, Xingliang Li, Minji Li, Yuzhang Yang, Jia Zhou, Qinping Wei, Beibei Zhou
Summary: This study analyzed the responses of apple plants to drought stress under AA treatment, and the results showed that AA treatment can improve drought tolerance in apple plants. Higher levels of chlorophyll and carotenoids were found, and the levels of ABA, JA, and methyl jasmonate were increased under AA treatment. Transcriptomic profiling identified key biological pathways involved in metabolism, MAPK signaling, plant hormone signal transduction, and secondary metabolite biosynthesis under different drought conditions.
Article
Plant Sciences
Lingfei Kong, Qin Song, Hongbin Wei, Yanhong Wang, Minghui Lin, Kuan Sun, Yuqian Zhang, Jiarui Yang, Chaofeng Li, Keming Luo
Summary: This study provides molecular evidence for the involvement of the PtoERF15PtoMYC2b transcription cascade in regulating xylem vessel development and improving drought tolerance in poplar.
Article
Agricultural Engineering
Miao Liu, Wei Chang, Mengna Yu, Yonghai Fan, Guoxia Shang, Yuanfang Xu, Yue Niu, Xumei Liu, Hong Zhu, Lishi Dai, Zhanglin Tang, Kai Zhang, Liezhao Liu, Cunmin Qu, Jiana Li, Kun Lu
Summary: The study identified the role of the rapeseed gene DAD1 in regulating silique length and seed weight increase, influencing fatty acid biosynthesis and phytohormone response pathways to enhance yield in rapeseed.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Plant Sciences
Ying Yao, Lijun Dong, Xiaohong Fu, Lin Zhao, Jianrong Wei, Jinfeng Cao, Yongyuan Sun, Jianfeng Liu
Summary: HrTCP20 is a transcription factor that regulates drought resistance in sea buckthorn. Overexpression of HrTCP20 increases the content of antioxidant enzymes and chlorophyll in sea buckthorn, while silencing HrTCP20 decreases the content of antioxidant enzymes and chlorophyll, and inhibits the expression of HrLOX2, a key enzyme in jasmonic acid synthesis.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Qingfang Lin, Jianyong Wang, Jiaxin Gong, Zhiliang Zhang, Song Wang, Jing Sun, Qianqian Li, Xu Gu, Jihong Jiang, Shilian Qi
Summary: Trehalose, a non-reducing disaccharide, acts as a protective compound against adverse conditions. The AtTPPI gene in Arabidopsis thaliana is crucial for improving plant water use efficiency and drought tolerance. In this study, we found that AtTPPI also participates in resistance to chilling stress. The expression of AtTPPI is regulated by CBF1, CBF2, and CBF3, and the jasmonic acid signaling pathway genes play a major role in this response. AtTPPI may mediate the synthesis of jasmonic acid and contribute to soluble sugar levels in response to chilling stress.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Jian-Ping An, Chun-Ling Zhang, Hong-Liang Li, Gui-Luan Wang, Chun-Xiang You
Summary: The BBX protein MdBBX37 was identified as a positive regulator of JA-induced leaf senescence in apple. MdBBX37 interacted with MdbHLH93 to enhance its activation on the senescence-associated gene MdSAG18, promoting leaf senescence. MdJAZ2 and MdSINA3 negatively regulated MdBBX37-promoted leaf senescence. Furthermore, MdBBX37 also played a role in ABA- and ethylene-mediated leaf senescence through interactions with MdABI5 and MdEIL1, respectively.
Article
Biochemistry & Molecular Biology
Jiehua Qiu, Junhui Xie, Ya Chen, Zhenan Shen, Huanbin Shi, Naweed I. Naqvi, Qian Qian, Yan Liang, Yanjun Kou
Summary: Changes in global temperatures have a significant impact on the occurrence of plant diseases. This study reveals the molecular mechanism behind the epidemic of rice blast at warm temperatures, showing that reduced JA biosynthesis and signaling enhance the susceptibility to Magnaporthe oryzae infection.
Article
Agronomy
Ning Tao, Yuhan Liu, Qingyu Shi, Qingguo Wang, Qingqing Li
Summary: In this study, we investigated the effect and mechanism of an ATP-binding cassette transporter, SlABCG23, on the chilling resistance of tomato fruit during storage. We found that mutation of SlABCG23 resulted in severe chilling injury, decreased jasmonic acid contents, and increased expression levels of the JA signaling inhibitor, SlJAZ6. This mutation also led to a decrease in fruit pericarp thickness, lower expression levels of cold response genes, and reduced antioxidant enzyme activities.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Plant Sciences
Wei Liu, Yun Jiang, Yazhong Jin, Chenghui Wang, Juan Yang, Hongyan Qi
Summary: The study revealed that ABA, H2O2, and JA positively regulate the expressions of CmCADs and participate in lignin synthesis under drought stress. Different signal molecules have distinct positive regulatory effects on specific CmCADs and lignin biosynthesis genes.
Review
Cell Biology
Philip Steiner, Elisabeth Arlt, Ingrid Boekhoff, Thomas Gudermann, Susanna Zierler
Summary: This article focuses on the function of two-pore channels (TPCs) in mast cells, which play a crucial role in regulating calcium homeostasis and mast cell degranulation. TPC1 inhibition increases histamine release, while TPC channel activation enhances calcium release from endolysosomes, improving regulated mast cell degranulation. Thus, TPC1 is important for regulating calcium homeostasis in mast cells and has potential as a pharmacological target in anti-inflammatory therapy.
Article
Plant Sciences
Shahnewaz Begum, Shenglin Jing, Liu Yu, Xiaomeng Sun, Enshuang Wang, Md Abu Kawochar, Jun Qin, Jun Liu, Botao Song
Summary: The research revealed the essential role of JAZ1-like-mediated JA signalling in potato tuberization by suppressing tuber initiation and modulating the expression of genes associated with transcriptional regulators, cell cycle, and cytoskeleton. Additionally, the destabilization of StJAZ1-like upon treatment with abscisic acid (ABA) and the partial rescue of the attenuated tuberization phenotype in StJAZ1-like ox plants by ABA treatment were also demonstrated.
Article
Plant Sciences
Youzhong Li, Haihong Chen, Youwu Wang, Jincheng Zhu, Xiaoli Zhang, Jie Sun, Feng Liu, Yiying Zhao
Summary: This study characterized the WRKY53 gene family in upland cotton through bioinformatics analysis and investigated its role in cotton's resistance to Verticillium dahliae. The results showed that GhWRKY53 mediated the signal transduction pathways of salicylic acid and methyl jasmonate, regulating the resistance of cotton to the disease. However, further research is needed to elucidate the interaction mechanism between jasmonic acid and salicylic acid signaling pathways in cotton's response to Verticillium dahliae.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Chao Li, Jia-Rui Kong, Jie Yu, Yi-Qin He, Zhen-Kun Yang, Jun-jie Zhuang, Cheng-Cheng Ruan, Yan Yan, Jian-Hong Xu
Summary: The study reveals that the DNA demethylase gene OsDML4 is required for regulating salt tolerance in rice. Through RNA-Seq analysis, it was found that the expression of genes related to ROS scavenging and JA signaling was significantly reduced in the osdml4 mutant under salt stress. Additionally, CHH methylation in the promoter region of an ROS-scavenging gene OsCATA was increased, particularly in the osdml4 mutant.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Medicine, Research & Experimental
Anna Scotto Rosato, Einar K. Krogsaeter, Dawid Jaslan, Carla Abrahamian, Sandro Montefusco, Chiara Soldati, Barbara Spix, Maria Teresa Pizzo, Giuseppina Grieco, Julia Boeck, Amanda Wyatt, Daniela Wuenkhaus, Marcel Passon, Marc Stieglitz, Marco Keller, Guido Hermey, Sandra Markmann, Doris Gruber-Schoffnegger, Susan Cotman, Ludger Johannes, Dennis Crusius, Ulrich Boehm, Christian Wahl-Schott, Martin Biel, Franz Bracher, Elvira De Leonibus, Elena Polishchuk, Diego L. Medina, Dominik Paquet, Christian Grimm
Summary: This study found that TPC2 activation can improve cellular phenotypes associated with LSDs, including cholesterol or lipofuscin accumulation and abnormal vacuole formation. Validation in patient cells and mouse models suggests that TPC2 is a promising target for the treatment of different types of LSDs.
EMBO MOLECULAR MEDICINE
(2022)
Article
Plant Sciences
Dorothea Graus, Kunkun Li, Jan M. Rathje, Meiqi Ding, Markus Krischke, Martin J. Mueller, Tracey Ann Cuin, Khaled A. S. Al-Rasheid, Soenke Scherzer, Irene Marten, Kai R. Konrad, Rainer Hedrich
Summary: Research found that tobacco leaves exhibit significant leaf movements and detoxify sodium ions through the release of cellular water under salt stress. Tobacco leaves can recover quickly after salt stress, and this recovery process depends on plasma membrane hydrogen ion pumps and vacuolar ion exchange. Unlike roots, salt stress signaling and processing in tobacco leaves do not rely on calcium signaling.
Article
Cell Biology
Dawid Jaslan, Irene Flavia Ferro, Veronika Kudrina, Yu Yuan, Sandip Patel, Christian Grimm
Summary: NAADP and PI(3,5)P2 are compounds that activate the endolysosomal two-pore channels TPC2 in mammalian cells. PI(3,5)P2 mainly elicits Na+-selective currents, while NAADP increases the Ca2+ permeability of the channel. Recent studies have revealed the effects of simultaneously applying these compounds.
Article
Plant Sciences
Shouguang Huang, Tobias Maierhofer, Kenji Hashimoto, Xiangyu Xu, Sohail M. Karimi, Heike Mueller, Michael A. Geringer, Yi Wang, Joerg Kudla, Ive De Smet, Rainer Hedrich, Dietmar Geiger, M. Rob G. Roelfsema
Summary: This study found that CIPK23 is expressed in Arabidopsis guard cells and enhances stomatal conductance by regulating the activity of multiple ion channel proteins, including the inhibition of SLAC1-type anion channels.
Article
Cell Biology
Dawid Jaslan, Sandip Patel, Christian Grimm
Article
Plant Sciences
Traud Winkelmann, Gerhard Bringmann, Anne Herwig, Rainer Hedrich
Summary: Triphyophyllum peltatum, a rare tropical African liana, exhibits facultative carnivory. This study identified phosphorus deficiency as the key trigger for the formation of carnivorous leaves in this plant. Cultivation of T. peltatum and induction of carnivory have been established, which will provide important insights into the molecular mechanism of carnivory.
Article
Environmental Sciences
Leila Arab, Yasutomo Hoshika, Elena Paoletti, Philip J. White, Michael Dannenmann, Heike Mueller, Peter Ache, Rainer Hedrich, Saleh Alfarraj, Ghada Albasher, Heinz Rennenberg
Summary: Chronic ozone exposure selectively disrupts metabolic processes in the roots rather than the shoot, affecting mineral uptake and partitioning between roots and shoots. However, there were no significant changes in total carbon and nitrogen concentrations and their partitioning between different metabolic pools. The effects of chronic ozone exposure on mineral acquisition and partitioning between leaves and roots are discussed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Plant Sciences
Rainer Hedrich, Ines Kreuzer
Summary: All plants have electrical excitability, but only few can produce a well-defined action potential (AP). The Venus flytrap Dionaea muscipula is able to generate APs with a high firing frequency and speed, allowing it to catch small animals quickly. The captured prey triggers a certain number of APs, which influences the trapping decisions made by the flytrap. The typical Dionaea AP lasts 1 second and consists of five phases, each controlled by specific ion channels, pumps, and carriers.
Article
Plant Sciences
Justyna Jaslan, Irene Marten, Liina Jakobson, Triinu Arjus, Rosalia Deeken, Cecilia Sarmiento, Alexis De Angeli, Mikael Brosche, Hannes Kollist, Rainer Hedrich
Summary: Plant transpiration is regulated by stomata, which are controlled by S- and R-type anion channels. Arabidopsis mutants lacking the ALMT12/QUAC1 R-type anion channel exhibit only a partial reduction in R-type channel currents. The molecular nature of these remaining R-type anion currents is still unknown.
Article
Multidisciplinary Sciences
Mengnan Xu, Xi Zoe Zhong, Peng Huang, Dawid Jaslan, Pingping Wang, Xue Sun, Eva- Maria Weiden, Yassine El Hiani, Christian Grimm, Xian- Ping Dong
Summary: TRPML3 and BK form a positive feedback loop to facilitate autophagy induction in response to nutrient deprivation and bacterial infection. This feedback loop is mediated by PI3P. TRPML3 releases calcium, which activates BK, and BK further enhances TRPML3-mediated calcium release.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Forestry
Baoguo Du, Jana Barbro Winkler, Peter Ache, Philip J. White, Michael Dannenmann, Saleh Alfarraj, Gadah Albasher, Joerg-Peter Schnitzler, Rainer Hedrich, Heinz Rennenberg
Summary: Drought and salt exposure have significant effects on water relations and nitrogen metabolites in leaves and roots of date palm seedlings. Water deprivation decreased total C concentration and increased total N concentration in roots, while salt exposure initially decreased total C concentration and increased total N concentration in roots, but increased total C concentration in leaves upon prolonged exposure. Both treatments resulted in the accumulation of most amino acids, indicating their role as compatible solutes in response to salt and drought stress in the roots, but not in the leaves. These findings highlight the differential impact of water deprivation and salt exposure on N metabolism in date palm seedlings.
Article
Plant Sciences
Bo Xu, Xueying Feng, Adriane Piechatzek, Shuqun Zhang, Kai R. Konrad, Johannes Kromdijk, Rainer Hedrich, Matthew Gilliham
Summary: This study revealed the important role of GADs in maintaining ROS homeostasis in guard cells, likely through a Ca2+-mediated pathway. The loss of GAD1, GAD4, and GAD5 in gad2 leaves increased GABA deficiency and resulted in increased cytosolic calcium and ROS accumulation in guard cells. Complementation with GAD2 or the application of ROS inhibitors restored the greater stomatal apertures of gad1/2/4/5, emphasizing the complexity of GABA's role as a guard-cell signal.
Article
Plant Sciences
Matthias Freund, Dorothea Graus, Andreas Fleischmann, Kadeem J. Gilbert, Qianshi Lin, Tanya Renner, Christian Stigloher, Victor Albert, Rainer Hedrich, Kenji Fukushima
Summary: To survive in nutrient-poor environments, carnivorous plants have developed traps analogous to animal digestive systems to capture and digest small organisms. These traps modify plant-specific organs, such as leaves, to acquire the ability to break down and absorb nutrients. Digestive glands in carnivorous plants secrete enzymes and other substances to digest prey, while absorbing the released compounds for nutrient uptake.
Article
Plant Sciences
Benjamin A. Babst, David M. Braun, Abhijit A. Karve, R. Frank Baker, Thu M. Tran, Douglas J. Kenny, Julia Rohlhill, Jan Knoblauch, Michael Knoblauch, Gertrud Lohaus, Ryan Tappero, Soenke Scherzer, Rainer Hedrich, Kaare H. Jensen
Summary: Phloem transport of photoassimilates plays a crucial role in plant growth and yield. This study demonstrates that sugar import is not necessary for phloem sap flow, and increased potassium loading compensates for decreased sucrose loading to maintain phloem pressure and transport.
Article
Plant Sciences
Ali Kiani-Pouya, Leiting Li, Fatemeh Rasouli, Zheting Zhang, Jiahong Chen, Min Yu, Ayesha Tahir, Rainer Hedrich, Sergey Shabala, Heng Zhang
Summary: This study characterized the transcriptome differences between intact and EBC-free quinoa leaves in response to salt stress. EBC-free leaves retained most of the transcriptome responses to salt stress, but failed to induce certain specific processes such as increased DNA replication activity. These results reveal the critical role of EBCs in salt stress acclimation of quinoa leaves.