Article
Biochemistry & Molecular Biology
Philipp Girr, Harald Paulsen
Summary: Water-soluble chlorophyll proteins (WSCPs) found in Brassicaceae are non-photosynthetic proteins with potential roles in stress response and pathogen defense by producing reactive oxygen species and/or Chl-regulated protease inhibitors. Interaction of WSCPs with thylakoid membrane involves a slow and inefficient extraction of chlorophyll, potentially due to the presence of hydrophobic amino acids and conserved Trp residues around the chlorophyll-binding site. Substitution of Trp residues with Phe hinders chlorophyll extraction but still allows membrane interaction by WSCP variants.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
(2021)
Article
Agronomy
Xiaoyun Huang, Hongxing Chen, Hui Chen, Chengwu Fan, Yueying Tai, Xiaoran Chen, Wang Zhang, Tengbing He, Zhenran Gao
Summary: The temporal and spatial heterogeneity of chlorophyll content and fluorescence in rice canopy leaves under different Cd stress concentrations was explored in this study. The responses of relative chlorophyll content (SPAD) and chlorophyll fluorescence (ChlF) parameters to Cd stress in different growth stages were analyzed. It was found that lower leaves had higher SPAD values in the tillering stage, while upper leaves had higher SPAD values in the heading and filling stages. Certain ChlF parameters were more sensitive to Cd stress than others.
Article
Biochemistry & Molecular Biology
Martin A. Stefanov, Georgi D. Rashkov, Ekaterina K. Yotsova, Anelia G. Dobrikova, Emilia L. Apostolova
Summary: The present study demonstrates the impact of salinity on the functions of thylakoid membranes in two hybrid lines of Paulownia. Short-term treatment with higher NaCl concentration inhibits the photochemical activities of both photosystems. The experimental results also indicate that Paulownia tomentosa x fortunei can adapt to a higher concentration of NaCl, while it is lethal for Paulownia elongate x elongata.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Parzhak Zoufan, Mohammad Reza Zare Bavani, Saham Tousi, Afrasyab Rahnama
Summary: This study investigated the effect of melatonin pretreatment on chlorophyll synthesis and fluorescence parameters in Malva parviflora exposed to cadmium (Cd). The results showed that melatonin increased chlorophyll content and improved the photochemical efficiency of PsbO by reducing the toxic effect of Cd and non-photochemical quenching. These findings provide insights into the mechanism underlying the improved yield and growth of Cd-exposed plants when pretreated with melatonin.
PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS
(2023)
Article
Biochemistry & Molecular Biology
Kaiser Iqbal Wani, M. Naeem, M. Masroor A. Khan, Tariq Aftab
Summary: Soil contamination by heavy metals poses a significant environmental challenge. This study investigated the potential of nitric oxide (NO) to reduce cadmium (Cd) toxicity in A. annua plants. Results showed that NO effectively reversed Cd-induced damage by modulating the antioxidant system and improving photosynthetic performance. The supplementation of NO also increased artemisinin production, highlighting its potential role in mitigating the negative impacts of environmental contaminants on plant health.
Article
Forestry
Xiaojia Liu, Yan Cai, Peiyan Ni, Binghan Liu, Xuedong Tang
Summary: The study found that the increase in atmospheric carbon dioxide concentration can alleviate the inhibition of hazelnut growth under cadmium pollution. It also enhances the photosynthetic capacity and improves the function of the photosystem II in hazelnut leaves. This increase in carbon dioxide concentration improves hazelnut's resistance to cadmium stress.
Article
Forestry
Yanan Li, Anqi Fang, Tengzi Zhang, Songzhu Zhang, Wenxu Zhu, Yongbin Zhou
Summary: The study demonstrates that exogenous calcium can enhance drought resistance in Mongolian pine by regulating photoprotection and improving chlorophyll fluorescence induction dynamics.
Article
Plant Sciences
Andrea Colpo, Sara Demaria, Paola Boldrini, Costanza Baldisserotto, Simonetta Pancaldi, Lorenzo Ferroni
Summary: This study describes the ultrastructural changes in the giant chloroplast in the epidermal cells of Selaginella martensii during daily relocation. The repositioning of the chloroplast may facilitate the renewal of the thylakoid system and recovery of photosystem II, while also limiting light absorption.
Article
Cell Biology
Krzysztof Sitko, Magdalena Opala-Owczarek, Gabriela Jemiola, Zaneta Gieron, Michal Szopinski, Piotr Owczarek, Malgorzata Rudnicka, Eugeniusz Malkowski
Summary: Birch trees have certain features that enable them to colonise extreme habitats successfully, such as increasing leaf thickness, higher content of flavonols and anthocyanins in leaves, and efficient non-photochemical quenching.
Article
Plant Sciences
Faiza Bashir, Ateeq Ur Rehman, Milan Szabo, Imre Vass
Summary: Singlet oxygen is a significant damaging agent produced during illumination, primarily affecting chlorophyll complexes and cellular constituents in photosynthetic organisms. The utilization of external photosensitizers is an effective approach to study the physiological role of singlet oxygen.
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Plant Sciences
Daili Ji, Qiuxin Li, Yinjie Guo, Wenjing An, Nikolay Manavski, Jorg Meurer, Wei Chi
Summary: This study reveals the important role of NADP(+) supply in the biogenesis of photosystem I. It shows that the primary limitation of photosynthetic electron transport occurs at PSI in the nadk2 mutant. This leads to the deficiency of the PSI complex.
Article
Agronomy
Antonela Markulj Kulundzic, Ana Josipovic, Maja Matosa Kocar, Marija Viljevac Vuletic, Jasenka Antunovic Dunic, Ivana Varga, Vera Cesar, Aleksandra Sudaric, Hrvoje Lepedus
Summary: As most soybean in Europe is grown in rainfed conditions, climate aberrations are causing significant crop yield variability. Breeding stable and adaptable cultivars is essential to stabilize the yield and shift the sources of supply to European-grown soybean. This research aimed to examine the physiological insights on soybean response to drought by monitoring various parameters. The results showed that some parameters are good indicators of drought stress, which can facilitate genotype selection and increase breeding program efficiency.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Biology
Fatima El Alaoui, Ignacio Casuso, David Sanchez-Fuentes, Charlotte Arpin-Andre, Raissa Rathar, Volker Baecker, Anna Castro, Thierry Lorca, Julien Viaud, Stephane Vassilopoulos, Adrian Carretero-Genevrier, Laura Picas
Summary: Clathrin-mediated endocytosis (CME) is a central trafficking pathway in eukaryotic cells regulated by phosphoinositides. The study reveals the molecular dynamics of FCHo2 self-assembly on membranes, showing that it forms ring-like-shaped protein patches and enhances PI(4,5)P-2 clustering, leading to increased clathrin assembly.
Article
Multidisciplinary Sciences
Yun Jiao, Jianhong Zhang, Cunde Pan
Summary: The pecan is a salt-alkali-tolerant plant with high economic value. This study explored the molecular mechanisms behind the pecan's salt stress tolerance using various methods and identified key genes and metabolic pathways. The findings provide an important preliminary foundation for improving the salt tolerance of pecans.
SCIENTIFIC REPORTS
(2022)
Article
Agronomy
Jianshuang Shen, Hefeng Cheng, Xueqin Li, Xiangdong Pan, Yue Hu, Songheng Jin
Summary: This study aimed to explore the effects of exogenous calcium chloride on the leaf microstructure, leaf epidermal ultrastructure, and chlorophyll a fluorescence of Rhododendron x pulchrum under heat stress. The results showed that exogenous calcium chloride improved the heat tolerance of R. x pulchrum by regulating the leaf anatomical structure and the behavior of epidermal cells and stomata, protecting the stability of photosystems I and II.
Article
Plant Sciences
Jingqiu Xia, Jiawen Liang, Mengmeng Yu, Rui Wang, Chen Sun, Huishan Song, Qinghua Xu, Jing Cang, Yuying Wang, Da Zhang
Summary: The MED complex acts as a bridge to regulate transcription by connecting transcription factors and specific gene promoters. This study demonstrates the important role of MED25 in freezing tolerance in wheat, possibly through its interaction with the jasmonate signaling pathway and cold-responsive genes.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Asier R. Larrinaga, Luis Sampedro, Rafael Zas
Summary: This study investigated the allocation to growth, reproduction, and defence in maritime pine under different resource availability and simulated herbivory treatments. The results showed that fertilization increased tree growth and seed quantity but not seed quality. Needle clipping and methyl-jasmonate treatment increased needle resin and phenol concentrations. Overall, there were complex interactions among the life-history dimensions, suggesting that pairwise approaches are insufficient to unravel these complexities.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Shuang Han, Shuxian Li, Ya Li, Qingchen Zhang, Yuanyuan Xu, Wenjing Wang, Xiao Qin Zhu, Dongli Pei
Summary: The xanthophyll cycle plays a significant role in protecting plants from membrane peroxidation induced by intense light exposure. This study identified 240 differentially expressed genes associated with respiratory chain, lipid metabolism, antioxidant activity, and flavonoid metabolism. The overexpression of the CmBCH1 gene resulted in the upregulation of genes involved in scavenging reactive oxygen species and encoding antioxidants, leading to the accumulation of xanthophyll, zeaxanthin, chlorophylls, and anthocyanins. The study highlighted the potential of BCH1 in regulating the xanthophyll cycle and enhancing tolerance to intense light stress in transgenic plants.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Yuzhu Ding, Hejun Ren, Xinyu Hao, Ruonan Zhang, Jianjun Hao, Jinliang Liu, Hongyu Pan, Yan Wang
Summary: This study demonstrated that co-expressing two exogenous genes, tfdB and bphC, in Arabidopsis thaliana improved the tolerance and removal efficiency of PCB28. Transgenic plants also exhibited increased enzymatic activities under PCB28 stress. The co-expression of tfdB and bphC in A. thaliana resulted in nearly twofold increase in PCB28 removal rates from soil. This research suggests that co-expressing two genes holds great potential for enhancing phytoremediation efficiency and mitigating PCB-induced toxicity stress on plants.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Nosheen Kabir, Sumbal Wahid, Shoaib Ur Rehman, Ghulam Qanmber
Summary: Trichomes are specialized plant structures that protect plants and are regulated by complex gene networks and signaling pathways. Gene expression, cell cycle regulation, and differentiation determine whether cells become trichomes. Transcription factors, epigenetic modifications, and phytohormones play important roles in trichome development. The integration of phytohormonal and transcriptional networks contributes to the diversity and adaptability of trichomes in plants.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Enrique Mateos-Naranjo, Jesus Alberto Perez-Romero, Giacomo Puglielli, Javier Lopez-Jurado, Jennifer Mesa-Marin, Eloisa Pajuelo, Ignacio David Rodriguez-Llorente, Susana Redondo-Gomez
Summary: The impact of multifactorial abiotic stress combinations on plant functional responses remains controversial. The halophyte Salicornia ramosissima showed unique functional responses depending on the specific stress factors involved. Under extreme conditions, there was a more negative impact on plant functional traits, but the presence of beneficial microorganisms, especially in combination with elevated atmospheric CO2 concentration, mitigated these negative effects.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
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)
Article
Plant Sciences
Ning Li, Peiyao Yu, Yanling Zeng, Jiali Chen, Wenhai Yang, Guannan Qin, Shenxiu Du, Xiao Han, Li-Jun Huang
Summary: In eukaryotic cells, epigenetic modifications of DNA and histones play a crucial role in gene expression regulation. ROXY19, a plant-specific CC-type glutaredoxin, was found to strongly repress a subset of genes regulated by class II TGA factors through its association with the TPL/TPR family. The ectopic expression of ROXY19 in Arabidopsis plants led to hypersensitivity to xenobiotic chemicals due to the silencing of detoxification pathway genes.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Yang Li, Chenyang Feng, Yijing Xing, Meng Li, Xiaoning Wang, Qingjie Du, Huaijuan Xiao, Juanqi Li, Jiqing Wang
Summary: In this study, researchers found that CsNLP1 gene in cucumber plays an important role in nitrogen utilization. The study also revealed the regulation mechanism of CsNLP1 in cucumber growth and nitrogen assimilation.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Lei Chen, Cheng Jiang, Li Ye, Yue Gao, Xilin Hou
Summary: This study identified and characterized 163 C2H2-type zinc finger proteins in non-heading Chinese cabbage. Two of these proteins, BcZAT12 and BcZAT10, were found to be closely related to cold tolerance and acted as transcriptional repressors in regulating cold resistance. Furthermore, BcZAT12 was shown to directly bind to the promoter of BcCBF1 and inhibit its activity. Additionally, interactions between BcZAT12 and other proteins such as BcABF2/4 were observed. These findings provide insights into the functional roles and regulatory mechanisms of C2H2-ZFPs in non-heading Chinese cabbage under cold stress.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Ommolbanin Tourajzadeh, Halimeh Piri, Amir Naserin, Mohammad mahdi Cahri
Summary: The combination of NB and reduced irrigation water depth can mitigate the negative effects of salinity and drought stresses on quinoa and improve its water productivity. The use of NB up to 2% alleviated salinity and drought stress and increased yield, while decreasing salinity and irrigation water depth increased water productivity. The appropriate use of NB can reduce the negative effects of stress and promote the sustainable production of quinoa.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Jing Li, Yujie Wu, Xiaohui Feng, Tabassum Hussain, Kai Guo, Xiaojing Liu
Summary: This study investigated the growth and physiological responses of cherry tomatoes under different salt conditions and found that nonuniform salinity conditions improved photosynthetic characteristics, water use efficiency, and fruit yield. These findings are important for improving tomato productivity on salt-affected lands.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Ruonan Li, Ruying Wang, Meng Li, Yunpu Zheng, Xiaxiang Zhang, Zhimin Yang, Jingjin Yu
Summary: The study found that elevated CO2 can increase stolon growth and carbohydrate accumulation in stolon nodes and internodes. Foliar application of auxin enhances this effect, while auxin transport inhibitor has no effect.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Jian-Jun Tao, Cui-Cui Yin, Yang Zhou, Yi-Hua Huang, Shou-Yi Chen, Jin-Song Zhang
Summary: Soil salinization is a major obstacle for agriculture sustainability, as it severely affects plant growth and crop yield. Ethylene, a stress hormone, plays a crucial role as a signal molecule in coordinating plant growth and stress response in the model plant Arabidopsis. However, the roles and mechanisms of ethylene in most crop plants under salinity remain undefined. This review summarizes the universal roles of ethylene and focuses on its divergent roles in rice and other crop species under salinity, particularly in terms of ethylene biosynthesis and signal transduction. The contradictions between ethylene production and signaling in salt response are also discussed.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)
Article
Plant Sciences
Chang Guo, Xiaona Wang, Qi Wang, Zipeng Zhao, Bing Xie, Lang Xu, Ruijie Zhang
Summary: This review provides an overview of the effects of ozone pollution on plant secondary metabolism. It explores the role of plant secondary metabolism in defense against ozone stress and adaptation to ozone-polluted environments, while summarizing the severity of ozone pollution.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2024)