Article
Plant Sciences
Kiki Spaninks, Remko Offringa
Summary: In nature, plant shoots are exposed to light while the roots grow in darkness. However, many root studies use in vitro systems that expose the roots to light, ignoring the potential effects of light on root development. This study investigates the impact of direct root illumination on root growth and development in Arabidopsis and tomato. The results show that light inhibits the expression of certain genes involved in auxin production, leading to reduced root growth. These findings emphasize the importance of studying root system architecture in in vitro systems where roots are grown in darkness.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Yongtao Yu, Sergi Portoles, Yi Ren, Guangyu Sun, Xiao-Fang Wang, Huihui Zhang, Shaogui Guo
Summary: The F-box protein ZEITLUPE (ZTL) negatively regulates ABA signaling in Arabidopsis thaliana during early seedling growth and stomatal closure induced by ABA. ZTL interacts with and ubiquitinates its substrate CHLH/ABAR to modulate CHLH stability. ABA induces ZTL phosphorylation and CHLH degradation, suggesting a reciprocal regulation mechanism between ABA signaling and the circadian clock.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Feng Kong, Katrina M. Ramonell
Summary: The gene ATL12 plays an important role in the response to salt stress and abscisic acid (ABA) in Arabidopsis thaliana. Overexpression of ATL12 increases the expression of salt stress-associated genes and ABA-responsive genes, and leads to higher levels of reactive oxygen species. Mutants of atl12 are sensitive to salt stress and ABA, and have shorter root length. The findings suggest that ATL12 modulates the response to salt stress and is involved in the ABA signaling pathway.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Prakash Kumar Bhagat, Deepanjali Verma, Deepika Sharma, Alok Krishna Sinha
Summary: The study investigates the cross-talk between light and ABA signaling in plants, identifying a physical interaction between transcription factors HY5 and ABI5. ABI5 may act as a negative regulator during photomorphogenesis, while HY5 acts as a positive regulator of ABA signaling. The findings provide insights into the mechanism of interaction between ABI5-HY5 that fine tunes the stress and developmental response in Arabidopsis.
PLANT MOLECULAR BIOLOGY
(2021)
Article
Developmental Biology
Mabel Maria Mathew, Kalika Prasad
Summary: Plants have unparalleled multi-scale regenerative potential, ranging from specific cell types, tissues and organs, to the entire organism, despite lacking specialized cells and being encased in rigid cell walls. Studies on Arabidopsis thaliana have provided insights into the mechanisms underlying plant regeneration.
Article
Biochemistry & Molecular Biology
Xiaolin Jia, Meifang Song, Shaoci Wang, Tong Liu, Lijian Wang, Lin Guo, Liang Su, Yong Shi, Xu Zheng, Jianping Yang
Summary: In Arabidopsis, the involvement of phytochrome A (phyA) and phytochrome B (phyB) in blue light signaling has been demonstrated. However, the mechanism of how blue light-activated phytochromes modulate the activity of the COP1-SPA1 E3 complex remains unclear. This study reveals that phyA responds to early and weak blue light, while phyB responds to sustainable and strong blue light. Activation of both phyA and phyB inhibits SPA1 activity by promoting their nuclear import and binding to SPA1, disrupting SPA1's interaction with HY5 and promoting seedling photomorphogenesis.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2023)
Review
Plant Sciences
Li Jia, Lining Liu, Yujing Zhang, Wenxuan Fu, Xing Liu, Qianqian Wang, Mohsin Tanveer, Liping Huang
Summary: Microplastic pollution is a global issue that affects plant growth and development due to its resilience and persistence in different ecosystems. This article critically analyzes the effects of microplastic stress on plants and suggests targeting redox regulatory mechanisms to improve tolerance. The use of agronomic approaches such as growth regulators and biochar can alleviate microplastic stress in plants.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Plant Sciences
Victor P. Bulgakov, Olga G. Koren
Summary: This article explores the mechanisms by which plants optimize growth and development through the signaling system regulated by light and ABA, as well as the interactions between light and ABA signals in plant development.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Jiachen Zhao, Guangqiong Yang, Lu Jiang, Shilong Zhang, Langxi Miao, Peng Xu, Huiru Chen, Li Chen, Zhilei Mao, Tongtong Guo, Shuang Kou, Hong-Quan Yang, Wenxiu Wang
Summary: Phytochromes A and B inhibit brassinosteroid signaling by stabilizing BIN2 and promoting BES1 phosphorylation, providing a new regulatory mechanism for coordinating light and BR signaling pathways in photomorphogenesis.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Ying Lu, Li Yuan, Zhou Zhou, Mengyu Wang, Xiaoyun Wang, Shizhong Zhang, Qinghua Sun
Summary: The study demonstrated that the anti-stress function of AtPDI1 in Arabidopsis is directly related to its disulfide isomerase activity. Mutant plants with altered cysteine residues showed significantly lower germination rates under stress conditions compared to wild-type and overexpressing lines. The transcriptional levels of stress-responsive genes were also lower in the mutant plants, indicating the importance of AtPDI1 in stress response.
Article
Biochemistry & Molecular Biology
Xilan Yang, Ward Poelmans, Carolin Grones, Abdellah Lakehal, Julie Pevernagie, Michiel Van Bel, Maria Njo, Lin Xu, Hilde Nelissen, Bert De Rybel, Hans Motte, Tom Beeckman
Summary: In this study, the gene expression patterns in the roots of lycophyte Selaginella moellendorffii were examined using spatial transcriptomics. The results suggest a highly convergent evolution of mechanisms to control root development between lycophytes and seed plants, while also showing a clear divergence in the regulation of root cap formation. The study also identified a potential novel role of WOX genes in root cap formation in non-seed plants.
Review
Plant Sciences
Shenghui Li, Sha Liu, Qiong Zhang, Meixiang Cui, Min Zhao, Nanyang Li, Suna Wang, Ruigang Wu, Lin Zhang, Yunpeng Cao, Lihu Wang
Summary: This review summarizes the roles of ABA and ROS in apoplast ROS production, plant response to biotic and abiotic stresses, plant growth regulation, ABA signal transduction, and the regulatory relationship between ABA and other plant hormones. Additionally, the effects of protein post-translational modifications on ABA and ROS related factors are also discussed.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Aaron Chan, Claudio Stasolla
Summary: The effect of red light on the induction of somatic embryogenesis was studied in Arabidopsis, and it was found that red light signaling mediated by PHYE is involved in the regulation of BR biosynthesis and AGL15 expression, which are crucial for somatic embryo formation. This study provides insights into the mechanism underlying the role of red light in somatic embryogenesis.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Mengjiao Ruan, Wenliang He, Rui He, Xiangxiang Wang, Jinxin Wei, Yujie Zhu, Ruiling Li, Zhijun Jiang, Xiaofan Na, Xiaomin Wang, Yurong Bi
Summary: The study reveals the important role of AOX2 in Arabidopsis seed germination by regulating ABA signal and ROS homeostasis under salt stress. Additionally, ABI3/ABI4 are essential for salt-induced AOX2 expression.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Review
Biochemistry & Molecular Biology
Zhe Wang, Xiaoping Gou
Summary: Stomata are crucial for gas and water exchange in plants as well as serving as entry points for pathogens. Stomatal immunity, which involves RLK-mediated signaling pathways, plays a significant role in plant defense against pathogens.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Lucas Cortes Llorca, Ran Li, Felipe Yon, Martin Schaefer, Rayko Halitschke, Christelle A. M. Robert, Sang-Gyu Kim, Ian T. Baldwin
Article
Biology
Erica McGale, Henrique Valim, Deepika Mittal, Jesus Morales Jimenez, Rayko Halitschke, Meredith C. Schuman, Ian T. Baldwin
Article
Plant Sciences
Henrique Valim, Heidi Dalton, Youngsung Joo, Erica McGale, Rayko Halitschke, Emmanuel Gaquerel, Ian T. Baldwin, Meredith C. Schuman
Article
Multidisciplinary Sciences
Jiancai Li, Rayko Halitschke, Dapeng Li, Christian Paetz, Haichao Su, Sven Heiling, Shuqing Xu, Ian T. Baldwin
Summary: Many plant specialized metabolites play a role in herbivore defense, but interrupting their biosynthetic pathways can lead to autotoxicity. Research has shown that tobacco plants avoid autotoxicity by regulating metabolic modifications, while achieving herbivore defense through inhibition of herbivore sphingolipid biosynthesis.
Article
Biochemistry & Molecular Biology
Jun He, Rayko Halitschke, Ian T. Baldwin, Meredith C. Schuman
Summary: The production of (S)-(+)-linalool in plants is associated with slower growth of a generalist herbivore, with a large fraction present as nonvolatile derivatives. The variation in volatile linalool and its nonvolatile glycosides mapped to the same genetic locus harboring the biosynthetic gene, NaLIS. Free linalool showed more variability in environmental responses compared to its conjugates.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Yuechen Bai, Caiqiong Yang, Rayko Halitschke, Christian Paetz, Danny Kessler, Konrad Burkard, Emmanuel Gaquerel, Ian T. Baldwin, Dapeng Li
Summary: This study reveals a nonhost resistance mechanism of plants against herbivores through genomic, transcriptomic, and metabolomic analysis. The results show that a module triggered by Empoasca leafhoppers induces the synthesis of a specific compound in crop plants, which confers resistance to leafhoppers.
Article
Plant Sciences
Maitree Pradhan, Catarina Rocha, Rayko Halitschke, Ian T. Baldwin, Shree P. Pandey
Summary: miR390 is a highly conserved miRNA in plant lineages known to function in growth and development processes, such as lateral root development, and in responses to salt and metal stress. However, its biological function in the ecological model species, Nicotiana attenuata, remains unknown. Overexpression of Na-miR390 in N. attenuata plants has been shown to regulate the plant's tolerance of herbivory by affecting the accumulation of auxin and other phytohormones.
Article
Multidisciplinary Sciences
Anurag A. Agrawal, Laura Espinosa Del Alba, Xose Lopez-Goldar, Amy P. Hastings, Ronald A. White, Rayko Halitschke, Susanne Dobler, Georg Petschenka, Christophe Duplais
Summary: This study reveals an increase in cardenolide concentrations in common milkweed seeds towards the host's range center, with an exception of labriformin which peaked at higher latitudes. The specialist lygaeid bugs and monarch butterflies differ in their tolerance to cardenolides, with Oncopeltus showing greater tolerance to labriformin. Metabolized cardenolides were found to be less toxic than their parent compounds.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Multidisciplinary Sciences
Sven Heiling, Jiancai Li, Rayko Halitschke, Christian Paetz, Ian T. Baldwin
Summary: This study reveals that caterpillars are able to rearrange key constituents of plant defense pathways and disable their defensive properties. This discovery was made through comparative metabolomics of tobacco leaves and caterpillar frass. Further analysis showed that plants have evolved mechanisms to counter this defensive rearrangement.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Plant Sciences
Caiqiong Yang, Yuechen Bai, Rayko Halitschke, Klaus Gase, Gundega Baldwin, Ian T. T. Baldwin
Summary: Plants use limited resources to produce toxic defenses in response to challenges from herbivores and competitors. Jasmonate signaling, mediated by MYC2 transcription factors, helps reconfigure metabolism to minimize defense costs and optimize fitness in complex environments. In this study, NaMYC2a/b genes were silenced in Nicotiana attenuata, resulting in higher growth and fitness in environments with reduced herbivores but lower fitness in high herbivore-load environments. The presence of competitors and mobile herbivores led to lower fitness in single-genotype setups but increased fitness in mixed-genotype setups. MYC2 TFs play a crucial role in the reconfiguration of primary and specialized metabolism for plants to optimize their fitness in complex environments.
Article
Plant Sciences
Yanrong You, Rishav Ray, Rayko Halitschke, Gundega Baldwin, Ian T. Baldwin
Summary: Hydroxy- and carboxyblumenol C-glucosides specifically accumulate in roots and leaves of plants harboring arbuscular mycorrhizal fungi (AMF). Silencing the key gene CCD1 in blumenol biosynthesis resulted in changes in blumenol and AMF-specific lipid accumulations, and the relationship between them. Blumenol accumulations reflect plant fitness when grown in isolation, but predict fitness outcomes when grown with competitors.
Article
Environmental Sciences
Vignesh Venkateswaran, Ibrahim Alali, Anjana P. Unni, Jerrit Weissflog, Rayko Halitschke, Bill S. Hansson, Markus Knaden
Summary: Increasing concentrations of oxidant pollutants like ozone can negatively impact insect olfactory behavior and result in the enrichment of oxidation products, affecting their behavioral choices.
ENVIRONMENTAL POLLUTION
(2023)
Article
Plant Sciences
Mathilde Chopy, Marta Binaghi, Gina Cannarozzi, Rayko Halitschke, Benoit Boachon, Roel Heutink, Dikki Pedenla Bomzan, Lea Jaggi, Geert van Geest, Julian C. Verdonk, Cris Kuhlemeier
Summary: Members of the R2R3-MYB transcription factor subgroup 19 (SG19) have diverse functions in flower development and maturation. EOB1 is involved in scent emission, while EOB2 has pleiotropic functions in flower development and acts as a repressor of flower bud senescence. Furthermore, EOB2 also regulates petal and pistil maturation through primary and secondary metabolism. These findings provide new insights into the genetic regulation of flower maturation and senescence, as well as the adaptation of plants to specific pollinators.
Article
Plant Sciences
Caiqiong Yang, Rayko Halitschke, Sarah E. O'Connor
Summary: Triterpenes are bioactive compounds that play a crucial role in plant defense against biotic stressors. This study identified two oxidosqualene cyclases in tobacco that are involved in triterpene biosynthesis and demonstrated their importance in defense against insect larvae.
Article
Biochemistry & Molecular Biology
Sven Heiling, Lucas Cortes Llorca, Jiancai Li, Klaus Gase, Axel Schmidt, Martin Schaefer, Bernd Schneider, Rayko Halitschke, Emmanuel Gaquerel, Ian Thomas Baldwin
Summary: This study confirmed the defensive function of glucosylation and malonylation steps in HGL-DTG biosynthesis through gene silencing, highlighting that glucosylation is a critical step in generating defensive metabolites.