Article
Plant Sciences
Jiewei Hao, Xueyan Xu, Lina Zhang
Summary: The study revealed significant impacts of seasonal climatic factors on the photochemical performance of terrestrial mosses, with different species developing various mechanisms to cope with adverse abiotic stresses. Some moss species showed good adaptation to habitat temperature and water pattern changes, although they still experienced reduced CO2 assimilation efficiency during drier months, while others were more susceptible to seasonality, especially during periods of lower rainfall and relative humidity. Certain moss species were identified as ideal ecological indicators for photosynthetic acclimation to stressed environments due to their sensitivity to water pattern changes resulting from climate change.
Article
Plant Sciences
Bradley C. Posch, Julia Hammer, Owen K. Atkin, Helen Bramley, Yong-Ling Ruan, Richard Trethowan, Onoriode Coast
Summary: Wheat photosynthetic heat tolerance can be quantified using minimal chlorophyll fluorescence to measure the critical temperature. We investigated the intraspecies variation and plasticity of wheat T-crit under elevated temperature and found it to be unrelated to global patterns of interspecies heat tolerance. The observed genotypic variation and plasticity suggest that T-crit could be a useful trait for phenotyping wheat photosynthetic heat tolerance.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Article
Agronomy
Jaroslav Lang, Barbora Zikmundova, Josef Hajek, Milos Bartak, Peter Vaczi
Summary: The sensitivity of fodder galega to herbicides and its photosynthetic performance were evaluated. The application of selected herbicides had negative effects on the primary photosynthetic processes. MCPA and MCPB had a greater impact on the plants compared to IMA.
Article
Plant Sciences
Radoslaw Mazur, Justyna Maszkowska, Anna Anielska-Mazur, Maciej Garstka, Lidia Polkowska-Kowalczyk, Anna Czajkowska, Agnieszka Zmienko, Grazyna Dobrowolska, Anna Kulik
Summary: The study demonstrates that SnRK2.10 is rapidly activated in response to salt stress and contributes to salt stress tolerance by maintaining efficient photosynthesis and preventing oxidative damage.
Article
Plant Sciences
Yu-Chieh Chiu, Bo-Jen Chen, Yen-Shuo Su, Wen-Dar Huang, Chang-Chang Chen
Summary: The study evaluated the protective effect of Azoxystrobin on tea plants under drought stress, revealing that the application of AZ under 22.8% PEG iso-osmotic condition can alleviate physiological damage in tea leaves. However, it had no impact on photosynthetic pigments, total phenols, and ascorbate peroxidase activity. The research also developed a rapid screening method for protective agents against drought in tea plants.
Article
Plant Sciences
Qiang Zhao, Wanzheng Shen, Yanhua Gu, Jiachen Hu, Yue Ma, Xinlin Zhang, Yanli Du, Yuxian Zhang, Jidao Du
Summary: Saline-alkali stress (SS) is a common abiotic stress that inhibits plant growth and biomass accumulation. Melatonin treatment has been found to alleviate the effects of SS by reducing reactive oxygen species accumulation, DNA oxidative damage, and improving photosynthesis and carbohydrate metabolism. This study showed that melatonin treatment improved soybean SS tolerance by increasing antioxidant content, cell size, chloroplast number, chlorophyll and carotenoid content, and promoting effective light capture and electron transfer.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Biochemistry & Molecular Biology
Gabor Sipka, Melinda Magyar, Alberto Mezzetti, Parveen Akhtar, Qingjun Zhu, Yanan Xiao, Guangye Han, Stefano Santabarbara, Jian-Ren Shen, Petar H. Lambrev, Gyozo Garab
Summary: The study reveals that the light-adapted charge-separated state in PSII undergoes a transition from the closed state, contributing to variable chlorophyll-a fluorescence and involving complex photochemical and photophysical reactions. The highest fluorescence level is associated with the light-adapted state rather than the closed state, challenging the traditional understanding of fluorescence parameters in PSII quantum efficiency assessment.
Article
Plant Sciences
Zhu Cun, Xiang-Zeng Xu, Jin-Yan Zhang, Sheng-Pu Shuang, Hong-Min Wu, Tong-Xin An, Jun-Wen Chen
Summary: Photosynthetic adaptive strategies of shade-tolerant species Panax notoginseng to high and low light conditions were investigated. Growth irradiance affected the thickness of leaf tissues and the performance of photosynthesis-related pigments and antioxidant enzymes. The results suggest that PSI photoinhibition and photodamage to PSII acceptor side are key factors influencing the adaptability of P. notoginseng to different light regimes.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Julia Stachurska, Magdalena Rys, Ewa Pociecha, Hazem M. Kalaji, Piotr Dabrowski, Jana Oklestkova, Barbara Jurczyk, Anna Janeczko
Summary: The objective of this study was to investigate the impact of the deacclimation process on frost tolerance, photosynthetic efficiency, brassinosteroid (BR) homeostasis, and BRI1 expression in winter oilseed rape. The researchers found that deacclimation tolerance was influenced by cultivar, with some cultivars maintaining high frost tolerance after deacclimation, while others lost some of it. The study also revealed that measuring photosynthetic efficiency signals could be a sensitive tool for monitoring the deacclimation process and potential changes in frost tolerance. Higher levels of BR and lower BRI1 expression were associated with better frost tolerance cultivars.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agronomy
Zhenzhong Zhang, Tan Zhang, Baosi Yin, Zhongjing Wang, Runjie Li, Shen Li, Junfei Gu
Summary: The moderate sodium salt could stimulate the growth of A. canescens and effectively alleviate the deleterious impact of drought stress by increasing the turgor potential and relative water content and decreasing the leaf water osmotic potential. Furthermore, the photosynthetic capacity was improved and the negative effects of drought stress on photosystem II were mitigated.
Article
Biochemistry & Molecular Biology
Caihuang Xu, Qingjun Zhu, Jing-Hua Chen, Liangliang Shen, Xiaohan Yi, Zihui Huang, Wenda Wang, Min Chen, Tingyun Kuang, Jian-Ren Shen, Xing Zhang, Guangye Han
Summary: Photosystem I (PSI) is a large protein supercomplex involved in light-dependent oxidation and reduction processes. A study on PSI structure from Chl d-dominated cyanobacterium Acaryochloris marina revealed a unique composition of electron transfer chain, providing insights into the mechanism of photosynthesis utilizing Chl d as the primary pigment and absorbing far-red light.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2021)
Article
Plant Sciences
Rosalie J. Harris, Callum Bryant, Melinda A. Coleman, Andrea Leigh, Veronica F. Briceno, Pieter A. Arnold, Adrienne B. Nicotra
Summary: Foundation seaweed species are declining and facing extinctions due to unstable sea surface temperatures. Existing methods for characterizing seaweed thermal tolerance are time-consuming and hinder comparisons between species. A new method using temperature-dependent fluorescence curves offers a high-throughput approach for rapidly assessing photosynthetic thermal tolerance of seaweeds.
JOURNAL OF PHYCOLOGY
(2023)
Article
Mathematics
Denis D. Chesalin, Roman Y. Pishchalnikov
Summary: In this study, the optical properties of photosystem II reaction center were investigated using differential evolution algorithm. The results showed that the DE/rand-to-best/1/exp strategy accurately fitted the spectra of PSIIRC.
Article
Environmental Sciences
Asma Hanif, Zainul Abideen, Khwaja Ali Hasan, Basit Ali, Ali El-Keblawy, Muhammad Umar, Yamna Rao, Zamin Shaheed Siddiqui
Summary: Microbial inoculants are an environmentally sustainable approach for controlling soil pathogens and achieving agricultural intensification. This research aimed to examine the impact of newly isolated microbial biocontrol agents on growth and photosynthetic efficiency in pathogen-infected plants. The results showed that these agents inhibited the colonization of pathogenic fungus and significantly improved the growth of corn plants. Additionally, they improved various parameters of photosystem II, enhancing the efficiency of light reaction. These findings demonstrate that microbial antagonists offer an effective and eco-friendly alternative for sustainable agriculture.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Plant Sciences
Beatriz Lorente, Ines Zugasti, Maria Fernanda Ortuno, Pedro Nortes, Sebastian Banon, Jose Antonio Hernandez, Maria Jesus Sanchez-Blanco
Summary: The study found that Cistus albidus in compost substrate showed better growth adaptability and biomass accumulation under water stress conditions compared to plants grown in commercial substrate.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Plant Sciences
Seo-Young Lee, So-Jeong Jang, Hyo-Bong Jeong, Se-Young Lee, Jelli Venkatesh, Joung-Ho Lee, Jin-Kyung Kwon, Byoung-Cheorl Kang
Summary: This study identified the key role of a gene called ZEP in fruit color formation in peppers. The inheritance of the ZEP genotype can determine whether peppers will have orange or yellow mature fruit.
Article
Plant Sciences
M. A. Gururani
Summary: This study investigated the tolerance of transgenic Arabidopsis plants expressing a potato D200 gene to salinity stress. The D200 plants showed increased chlorophyll content, improved stomatal conductance, reduced electrolyte leakage, lower accumulation of malondialdehyde, and higher proline content compared to wild type plants under salt stress. Gene expression analysis revealed that D200 plants had higher mRNA transcript levels of three major antioxidant enzymes, and fluorescence kinetics analysis showed that the D200 plants were more efficient in primary photochemistry of photosystem II. These findings suggest that the D200 gene could be a potential candidate for developing stress-resilient crops.
BIOLOGIA PLANTARUM
(2022)
Article
Multidisciplinary Sciences
Essam Darwish, Ritesh Ghosh, Abraham Ontiveros-Cisneros, Huy Cuong Tran, Marcus Petersson, Liesbeth De Milde, Martyna Broda, Alain Goossens, Alex Van Moerkercke, Kasim Khan, Olivier Van Aken
Summary: Plants respond to mechanical stimuli by regulating their growth and defense mechanisms. This study identifies the molecular mechanisms of touch signaling and reveals that Piezo ion channels do not play a major role in touch-induced gene expression and thigmomorphogenesis. Instead, the receptor-like kinase Feronia acts as a strong negative regulator of the touch signaling pathway dependent on jasmonic acid. Furthermore, the calmodulin-binding transcriptional activators CAMTA1/2/3 are key regulators of the touch signaling pathway independent of jasmonic acid.
Article
Plant Sciences
Joung-Ho Lee, Jelli Venkatesh, Jinkwan Jo, Siyoung Jang, Geon Woo Kim, Jung-Min Kim, Koeun Han, Nayoung Ro, Hea-Young Lee, Jin-Kyung Kwon, Yong-Min Kim, Tae-Ho Lee, Doil Choi, Allen Van Deynze, Theresa Hill, Nir Kfir, Aviad Freiman, Nelson H. Davila Olivas, Yonatan Elkind, Ilan Paran, Byoung-Cheorl Kang
Summary: In this study, the genomes of representative sweet and hot pepper accessions were sequenced using long-read and/or linked-read methods. A high-quality reference genome was developed for the sweet pepper cultivar 'Dempsey' and used to identify structural variants in other pepper accessions. The pan-genome analysis revealed important agricultural traits associated with presence-absence variants and highlighted the role of transposable elements in shaping the genomic landscape of peppers.
HORTICULTURE RESEARCH
(2022)
Article
Agriculture, Multidisciplinary
Jelli Venkatesh, Sung Jin Kim, Muhammad Irfan Siddique, Ju Hyeon Kim, Si Hyeock Lee, Byoung-Cheorl Kang
Summary: This study examined the feasibility of using RNA interference (RNAi)-mediated gene silencing to control the western flower thrips (WFT). Transgenic tomato plants expressing double-stranded RNA (dsRNA) of WFT genes CopE and TLR6 were developed and found to increase the mortality of WFT that fed on them. The WFT that fed on these transgenic plants also showed reduced levels of the target genes, suggesting that their mortality was a result of RNAi-mediated gene silencing. These findings suggest that transgenic tomato plants expressing dsRNA of CopE and TLR6 could be used to control insecticide-resistant WFT.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2023)
Review
Biology
Eman Abdelhakim Eisa, Andrea Tilly-Mandy, Peter Honfi, Awad Yousef Shala, Mayank Anand Gururani
Summary: In vitro propagation of Chrysanthemum has become an important technique to overcome the limitations of conventional propagation methods and improve reproduction rates. This review provides a comprehensive understanding of the recent advancements in sterilization methods, plant growth regulators, and acclimation efficiency for the in vitro regeneration of Chrysanthemum.
Review
Biology
Gaurav Mudgal, Jaspreet Kaur, Kartar Chand, Manisha Parashar, Sanjoy K. Dhar, Gajendra B. Singh, Mayank A. Gururani
Summary: This article discusses the current status and problems of mistletoe management and proposes potential biotechnological and smart technological solutions. Traditional physical and chemical methods are not completely effective in addressing the damage caused by mistletoes to trees. Biocontrol agents and transgenic technologies may provide new approaches to tackle this issue.
Article
Plant Sciences
Shina Sasi, Sajeesh Kappachery, Jelli Venkatesh, Ritesh Ghosh, Mayank Anand Gururani
Summary: Plants expressing the potato PIP2-7 gene showed improved tolerance to osmotic stress, with higher chlorophyll content, improved stomatal conductance, less electrolyte leakage, and lower malondialdehyde accumulation. PIP plants also exhibited increased expression of antioxidant enzymes and stress-response genes, and had enhanced photochemical efficiency and photosynthetic activity compared to wild type plants. These findings suggest that PIP may be beneficial for developing stress-tolerant crops in the future.
PLANT GROWTH REGULATION
(2023)
Article
Plant Sciences
Essam Darwish, Ritesh Ghosh, Johan Bentzer, Nikos Tsardakas Renhuldt, Estelle Proux-Wera, Nadia Kamal, Manuel Spannagl, Bettina Hause, Nick Sirijovski, Olivier Van Aken
Summary: Wind, rain, herbivores, obstacles, and neighbouring plants provide important mechanical cues for plant growth and survival. However, there is still a lack of molecular understanding of transcriptional responses to touch in cereals. By performing whole-genome transcriptomics on wheat, barley, and oat, we found that touch-induced changes in the transcriptome occurred mainly within +/- 25 min after touching, with most genes being upregulated. Many touch-responsive genes remained highly expressed even 4 h post-treatment in barley and wheat. Functional categories such as transcription factors, kinases, phytohormones, and cell wall-related genes were affected by touch. Additionally, evidence for systemic spreading of touch-induced signaling was observed in oat and barley.
Article
Multidisciplinary Sciences
Mayank A. Gururani, Amira K. Atteya, Abeer Elhakem, Abdel-Nasser A. El-Sheshtawy, Rasha S. El-Serafy
Summary: This study evaluates the preservative efficiency of different essential oils in prolonging the longevity of carnation cut flowers and restricting microbial growth. Treatment with thyme and marjoram essential oils at a concentration of 50 mg/L was most effective, doubling the vase life of the flowers. Essential oil treatment also increased water uptake, reduced chlorophyll and carbohydrate decline, and inhibited bacterial growth.
Article
Horticulture
Eman Abdelhakim Eisa, Peter Honfi, Andrea Tilly-Mandy, Mayank Anand Gururani
Summary: This study aimed to evaluate the effect of exogenous melatonin (MT) on the morpho-physiological and biochemical attributes of Ranunculus asiaticus under normal and drought conditions. The results showed that the foliar application of MT significantly improved the growth parameters and drought tolerance of R. asiaticus, with the most significant effect observed at a concentration of 200 μM.
Article
Plant Sciences
Taiba Saeed, Tanveer Alam Khan, Aqeel Ahmad, Mohammad Yusuf, Sajeesh Kappachery, Qazi Fariduddin, Gaurav Mudgal, Mayank Anand Gururani
Summary: This study found that the combined application of exogenous 24-epibrassinolide (EBL) and selenium (Se) can significantly improve the growth parameters and antioxidant enzyme activities of tomato plants under low-temperature stress. Functional analysis identified the Q54YH4 protein as playing an active role in plant stress response. The reliability of plant responses to the external application of EBL and Se under low temperatures was evaluated by analyzing conserved regions in protein sequences.
Review
Plant Sciences
Sameera Karumannil, Tanveer Alam Khan, Sajeesh Kappachery, Mayank Anand Gururani
Summary: Inhospitable conditions, such as drought, extreme temperatures, salinity, heavy metals, and irradiation, lead to a reduction in agricultural productivity worldwide. Reactive oxygen species (ROS) generated by these stresses cause oxidative damage in plants. Melatonin serves as a growth regulator and protector against abiotic stresses due to its natural antioxidant properties. It also regulates genes associated with photosynthesis, making it an attractive chemical agent to improve plant resilience and optimize photosynthetic efficiency.
Article
Plant Sciences
Abdel-Raouf Bahgat, Abeer A. Dahab, Abeer Elhakem, Mayank Anand Gururani, Rasha S. El-Serafy
Summary: Osmotic stress negatively affects the growth and yield of roselle plants, but it can be alleviated by the integrated application of nitrogen-fixing bacteria soil amendment and foliar application of Aloe vera or moringa leaf extracts. The application of these extracts enhances the nutritional content and antioxidant production, leading to increased stress tolerance in the plants. The best results were observed when Azospirillum lipoferum x ALE was applied in salt-affected soil for roselle cultivation.
