Article
Biochemistry & Molecular Biology
Haiyue Ai, Julia Bellstaedt, Kai Steffen Bartusch, Lennart Eschen-Lippold, Steve Babben, Gerd Ulrich Balcke, Alain Tissier, Bettina Hause, Tonni Grube Andersen, Carolin Delker, Marcel Quint
Summary: Roots are able to sense and respond to elevated temperature independently of shoot-derived signals. This response is mediated by an unknown root thermosensor that uses auxin as a messenger to relay temperature signals to the cell cycle. Growth promotion is primarily achieved by increasing cell division rates in the root apical meristem, dependent on de novo local auxin biosynthesis and temperature-sensitive organization of the polar auxin transport system.
Review
Plant Sciences
Gustavo Ravelo-Ortega, Javier Raya-Gonzalez, Jose Lopez-Bucio
Summary: The rhizosphere is a soil-plant interface where bacterial and fungal species colonize and provide growth-promoting and adaptive benefits. Plant-bacteria relationships rely on the perception of volatile organic compounds (VOCs), phytohormones, and bacterial quorum sensing signals. Beneficial Trichoderma fungi emit active VOCs that contribute to plant morphogenesis and affect their colonization on roots. Recent findings have shed light on how compounds from beneficial bacteria and fungi impact root architecture and the signaling events mediating microbial recognition.
CURRENT OPINION IN PLANT BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Gustavo Ravelo-Ortega, Ramon Pelagio-Flores, Jose Lopez-Bucio, Jesus Campos-Garcia, Homero Reyes de la Cruz, Jesus Salvador Lopez-Bucio
Summary: The role of the root cap in plants' response to phosphate deprivation is not well understood. This study reveals early changes in root structure, physiology, and gene expression under low phosphate levels, highlighting the importance of the transcription factor SOMBRERO in sensing low phosphate levels. Plant roots efficiently adapt to uneven mineral nutrient distribution in soil to improve uptake of sparingly available resources, with short and branched root systems proliferating in areas rich in phosphate.
PLANT MOLECULAR BIOLOGY
(2022)
Article
Plant Sciences
Drishti Mandal, Saptarshi Datta, Giridhar Raveendar, Pranab Kumar Mondal, Ronita Nag Chaudhuri
Summary: RAV1 gene plays an important role in regulating root growth. The expression of RAV1 gene is suppressed in mutant, resulting in impaired cytokinin signaling and altered auxin transport and distribution, ultimately affecting the meristem size of the root.
Article
Biochemistry & Molecular Biology
Michael Stitz, David Kuster, Maximilian Reinert, Mikhail Schepetilnikov, Beatrice Berthet, Jazmin Reyes-Hernandez, Denis Janocha, Anthony Artins, Marc Boix, Rossana Henriques, Anne Pfeiffer, Jan Lohmann, Emmanuel Gaquerel, Alexis Maizel
Summary: Plant organogenesis requires the matching of metabolic resources with developmental programs. The root system in Arabidopsis is determined by primary root-derived lateral roots (LRs) and adventitious roots (ARs) formed from non-root organs. Lateral root formation requires the activation of transcription factors ARF7, ARF19, and LBD16. Adventitious root formation relies on the activation of LBD16 by auxin and WOX11. The allocation of shoot-derived sugar to the roots affects branching, but the mechanism of LRs formation is still unknown.
Article
Plant Sciences
Vanessa Castro-Rodriguez, Thomas J. Kleist, Nicoline M. Gappel, Fatiha Atanjaoui, Sakiko Okumoto, Mackenzie Machado, Tom Denyer, Marja C. P. Timmermans, Wolf B. Frommer, Michael M. Wudick
Summary: Plants use electrical and chemical signals for systemic communication, with herbivory triggering glutamate accumulation and calcium waves to report damage and initiate defense. By expressing fluorescent glutamate sensors in Arabidopsis, researchers found that displaying the sensors externally impacted plant growth and development. The study also revealed that sequestering glutamate at the cell surface disrupts meristematic cell supply and localized signaling, affecting root growth.
Article
Plant Sciences
Nicole M. Gibbs, Shih-Heng Su, Samuel Lopez-Nieves, Stephane Mann, Claude Alban, Hiroshi A. Maeda, Patrick H. Masson
Summary: The study identified the important impact of cadaverine on plant root growth, potentially through modulation of biotin biosynthesis. The molecular mechanisms underlying root growth regulation by cadaverine require further investigation.
Article
Plant Sciences
Eva van Zelm, Silvia Bugallo-Alfageme, Pariya Behrouzi, A. Jessica Meyer, Christa Testerink, Charlotte M. M. Gommers
Summary: The root system architecture of plants changes during salt stress exposure. Different accessions of Arabidopsis thaliana adopt different strategies in remodeling their root architecture during salt stress. Salt induces a multiphase growth response in roots, and both the growth rate of main roots during homoeostasis and lateral root appearance are the strongest determinants of overall root architecture. Furthermore, a trade-off between investing in main or lateral root length during salt stress is revealed. By studying natural variation in high-resolution temporal root growth using mathematical modeling, new insights in the interactions between dynamic root growth traits are discovered.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Nazish Annum, Moddassir Ahmed, Mark Tester, Zahid Mukhtar, Nasir Ahmad Saeed
Summary: This study investigated the role of Phospholipase C Isoform 5 (PLC5) in thermotolerance in Arabidopsis thaliana. The results showed that over-expression of PLC5 contributes to heat stress tolerance and maintains photosynthetic activity, with effects on root development.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Yinwei Zeng, Sebastien Schotte, Hoang Khai Trinh, Inge Verstraeten, Jing Li, Ellen van de Velde, Steffen Vanneste, Danny Geelen
Summary: The formation of adventitious roots is regulated by multiple factors, including light signaling and genetic functions. Light-induced metabolites play a role in inducing adventitious root formation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Editorial Material
Cell Biology
Hui Zhang, Qihua Ling
Summary: This article introduces a significant cellular process, autophagy, which degrades unwanted or damaged macromolecules and organelles through the lysosome or vacuole for recycling. Selective autophagy was found to play a crucial role in regulating chloroplast protein import and enhancing stress tolerance in plants.
Article
Plant Sciences
Brecht Wybouw, Helena E. Arents, Baojun Yang, Jonah Nolf, Wouter Smet, Michael Vandorpe, Max Minne, Xiaopeng Luo, Inge De Clercq, Daniel Van Damme, Matous Glanc, Bert De Rybel
Summary: A forward genetics screen identified the MYB12 transcription factor as a repressor of TMO5/LHW activity in Arabidopsis, regulating cell proliferation rates during root vascular development. Transcriptional networks play a crucial role in integrating internal and external signals for optimal plant growth and development. The MYB12-mediated negative feedback loop restricts TMO5/LHW activity, ensuring optimal cell proliferation rates during root vascular development in response to cytokinin signaling.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Review
Plant Sciences
Jesper R. van Dijk, Mario Kranchev, Ronny Blust, Ann Cuypers, Kris Vissenberg
Summary: Human activities have led to soil pollution with metals, posing risks to human health and wildlife. Establishing science-based environmental criteria and risk management policies is crucial. Understanding how metals accumulate in and affect plants is necessary, yet research on this topic is still limited.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Plant Sciences
Hiroyuki Ishida, Yu Okashita, Hiromi Ishida, Makoto Hayashi, Masanori Izumi, Amane Makino, Nazmul H. Bhuiyan, Klaas J. van Wijk
Summary: Chloroplasts, and plastids in general, are major sources of carbon and nitrogen recycling, being partially degraded by piecemeal autophagy. A mutant, gfs9-5, with defective membrane-trafficking factor GFS9, accumulates plastid bodies (PBs) and shows increased autophagic flux, suggesting a potential connection between GFS9 and autophagy in the process of piecemeal plastid autophagy.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Plant Sciences
Guillermo Baena, Ana B. Feria, Luis Hernandez-Huertas, Jacinto Gandullo, Cristina Echevarria, Jose A. Monreal, Sofia Garcia-Maurino
Summary: Phosphoenolpyruvate carboxylase (PEPC) is involved in carbon and nitrogen metabolisms, and a portion of it undergoes degradation via selective autophagy, with monoubiquitination playing a key role in the process. These findings increase understanding of the regulation of PEPC degradation.
Article
Cell Biology
Lusheng Fan, Cui Zhang, Bin Gao, Yong Zhang, Ethan Stewart, Jakub Jez, Keiji Nakajima, Xuemei Chen
Summary: This study reveals the mechanisms governing the non-cell autonomous activities of mobile miRNAs in plants and identifies the crucial role of microtubule dynamics in miRNA cell-to-cell movement.
DEVELOPMENTAL CELL
(2022)
Article
Multidisciplinary Sciences
Peng Gao, Pengfei Wang, Baijuan Du, Pinghua Li, Byung-Ho Kang
Summary: C4 photosynthesis in maize leaf involves the exchange of organic acids between mesophyll and bundle sheath cells, which is mediated by plasmodesmata. Changes in plasmodesmata and cell wall suberization affect the symplastic transport between mesophyll and bundle sheath cells. When there are differences in chloroplast morphology, plasmodesmata acquire sphincter and cytoplasmic sleeves, and suberin is discerned in the cell wall. Mutants affected in C4 cycle show earlier remodeling of plasmodesmata, inhibition of symplastic transport, and suberization of the cell wall compared to the wild type.
SCIENTIFIC REPORTS
(2022)
Article
Biochemistry & Molecular Biology
Zizhen Liang, Wai-Tsun Yeung, Juncai Ma, Keith Ka Ki Mai, Zhongyuan Liu, Yau-Lun Felix Chong, Xiaohao Cai, Byung-Ho Kang
Summary: The para-crystalline structures of prolamellar bodies and their transformation into grana thylakoids were investigated in Arabidopsis cotyledon cells using electron tomography. The roles of CURT1A and CURT1C in this process were identified.
Article
Cell Biology
Jierui Zhao, Mai Thu Bui, Juncai Ma, Fabian Kuenzl, Lorenzo Picchianti, Juan Carlos De la Concepcion, Yixuan Chen, Sofia Petsangouraki, Azadeh Mohseni, Marta Garcia-Leon, Marta Salas Gomez, Caterina Giannini, Dubois Gwennogan, Roksolana Kobylinska, Marion Clavel, Swen Schellmann, Yvon Jaillais, Jiri Friml, Byung-Ho Kang, Yasin Dagdas
Summary: The research reveals the presence of amphisome compartments in plant cells, which play a crucial role in the maturation and fusion of autophagosomes with vacuoles.
JOURNAL OF CELL BIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Yu Tang, Man Ip Ho, Byung-Ho Kang, Yangnan Gu
Summary: The nuclear basket is an essential structure of the nuclear pore complex, participating in various nuclear processes. This study identifies GBPL3 as a component of the plant NPC basket and reveals its role in transcription regulation by interacting with nucleoporins and recruiting other proteins. GBPL3 also physically interacts with the nucleoskeleton and is required for coordinating gene expression during plant development and stress responses.
Article
Biochemistry & Molecular Biology
Motohiro Fujiwara, Miyu Imamura, Katsuyoshi Matsushita, Pawel Roszak, Takafumi Yamashino, Yoichiroh Hosokawa, Keiji Nakajima, Koichi Fujimoto, Shunsuke Miyashima
Summary: Cell proliferation and cytokinin signaling play important roles in maintaining the symmetry of vascular tissue in plants. The GATA transcription factor and Arabidopsis response regulators cooperatively regulate cell proliferation to generate mechanical stress, which in turn shapes the symmetry and alignment of vascular tissue. This mechanism represents an alternative way to control tissue symmetry in the absence of cell fluidity.
Article
Plant Sciences
Chieko Goto, Akira Ikegami, Tatsuaki Goh, Kaisei Maruyama, Hiroyuki Kasahara, Yumiko Takebayashi, Yuji Kamiya, Koichi Toyokura, Yuki Kondo, Kimitsune Ishizaki, Tetsuro Mimura, Hidehiro Fukaki
Summary: In Arabidopsis thaliana, the mutation in the GNOM gene severely inhibits lateral root (LR) formation, while the fewer roots suppressor1 (fsp1) mutation partially restores LR formation. It has been found that fsp1 mutation increases endogenous IAA levels and the number of sites where auxin response accumulates before LR formation, and SUR2 gene affects IAA accumulation in the pericycle cells at the xylem pole.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Tatsuaki Goh, Yu Song, Takaaki Yonekura, Noriyasu Obushi, Zeping Den, Katsutoshi Imizu, Yoko Tomizawa, Yohei Kondo, Shunsuke Miyashima, Yutaro Iwamoto, Masahiko Inami, Yen-Wei Chen, Keiji Nakajima
Summary: This study addresses the fundamental question of how cell proliferation and cell expansion coordinate to determine organ growth and morphology in plants. The researchers developed a motion-tracking confocal microscope and an AI-assisted image-processing pipeline to quantitatively analyze cell division and elongation dynamics in Arabidopsis roots. They discovered lineage-constrained dynamics of cell division and elongation, and their contribution to root zonation boundaries.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Jun Zhou, Juncai Ma, Chao Yang, Xiu Zhu, Jing Li, Xuanang Zheng, Xibao Li, Siyu Chen, Lei Feng, Pengfei Wang, Man Ip Ho, Wenlong Ma, Jun Liao, Faqiang Li, Chao Wang, Xiaohong Zhuang, Liwen Jiang, Byung-Ho Kang, Caiji Gao
Summary: Short-term acute heat stress causes vacuolation of the Golgi apparatus, whereafter autophagy-related protein 8 (ATG8) translocates to the dilated Golgi membrane. The inactivation of the ATG conjugation system abolishes the targeting of ATG8 to the swollen Golgi, causing a delay in Golgi recovery after heat stress. CLATHRIN LIGHT CHAIN 2 (CLC2) is recruited to the cisternal membrane by ATG8, facilitating Golgi reassembly. This study reveals a hitherto unanticipated process of Golgi stack recovery from heat stress in plant cells and uncovers a previously unknown mechanism of organelle resilience involving ATG8.