Article
Plant Sciences
Hu Sun, Qi Shi, Ning-Yu Liu, Shi-Bao Zhang, Wei Huang
Summary: We found that drought stress delays the initiation of photosynthesis and exacerbates the loss of carbon gain under fluctuating light in tomato seedlings. Additionally, drought stress aggravates the over-reduction of photosystem I and suppresses the photoprotection of photosystem I. However, drought stress also enhances relative cyclic electron flow, which partially compensates for restricted CO2 fixation and promotes the photoprotection of photosystem I.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Hu Sun, Yu-Qi Zhang, Shi-Bao Zhang, Wei Huang
Summary: This study reveals that the decrease in leaf N content delays the induction speeds of net CO2 assimilation, stomatal conductance, and mesophyll conductance upon transition from low to high light in tomato seedlings. The photosynthetic induction kinetics are mainly affected by the induction response of mesophyll conductance rather than stomatal conductance.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Zhuang Xiong, Zhigang Dun, Yucheng Wang, Desheng Yang, Dongliang Xiong, Kehui Cui, Shaobing Peng, Jianliang Huang
Summary: Stomatal morphology plays an important role in regulating leaf gas exchange and photosynthetic efficiency under fluctuating light conditions. Smaller and denser stomata lead to faster stomatal response to light fluctuations but lower intrinsic water use efficiency. Stomatal morphology has less impact on stomatal conductance, and there is minimal correlation between steady-state and non-steady-state stomatal conductance among different genotypes. These findings highlight the significance of stomatal morphology in optimizing photosynthetic efficiency and plant growth under fluctuating light.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Zhuang Xiong, Dongliang Xiong, Detian Cai, Wei Wang, Kehui Cui, Shaobing Peng, Jianliang Huang
Summary: In this study, the leaf photosynthetic induction and underlying mechanism were compared between tetraploid and diploid rice for the first time. After polyploidization, tetraploid rice displayed slower stomatal opening in response to increasing light intensity. Stomatal opening, rather than biochemical processes, was found to be the most important factor contributing to the difference in photosynthetic induction between tetraploid and diploid rice. Tetraploid rice showed lower stomatal conductance and intercellular CO2 concentration, resulting in lower photosynthetic efficiency during light induction.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Article
Plant Sciences
Zhuang Xiong, Dongliang Xiong, Desheng Yang, Kehui Cui, Shaobing Peng, Jianliang Huang
Summary: This study aims to clarify the crucial limitation of photosynthetic induction under different nitrogen treatments, which may facilitate the improvement of photosynthetic efficiency under complex environments in the future.
PHYSIOLOGIA PLANTARUM
(2022)
Article
Biochemistry & Molecular Biology
Guenter G. Lehretz, Anja Schneider, Dario Leister, Uwe Sonnewald
Summary: Expression of VPZ genes in potato plants accelerates the induction and relaxation of photoprotection under various light conditions but does not improve photosynthetic rate or plant growth. Instead, tuber yield decreases under fluctuating light conditions. The negative effect may be due to reduced radiation use efficiency caused by strong NPQ induction under high light conditions.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2022)
Article
Plant Sciences
Han-Yu Wu, Mei-Yu Qiao, Ya-Jun Zhang, Wei-Jian Kang, Qing-Hu Ma, Hui-Yuan Gao, Wang-Feng Zhang, Chuang-Dao Jiang
Summary: The photosynthetic mechanism of crop yields in fluctuating light environments in the field remains controversial. Increased planting density enhanced the light fluctuation frequency and reduced the duration of daily high light, as well as the light-saturated photosynthetic rate, biomass, and yield per plant. Proteomic data also demonstrated that photosynthesis was mainly affected by the duration of high light and not by the light fluctuation frequency.
Article
Plant Sciences
Jiahuan Liu, Jing Zhang, Gonzalo M. Estavillo, Tao Luo, Liyong Hu
Summary: This study used eight genotypes of canola with varying leaf nitrogen content to investigate the effects of leaf nitrogen content on non-steady-state photosynthesis under dynamic light conditions. Significant differences in physiological characteristics and photosynthetic traits were observed among genotypes, with higher leaf nitrogen content genotypes showing a faster induction of photosynthesis to fluctuating light conditions.
PHYSIOLOGIA PLANTARUM
(2021)
Review
Plant Sciences
Armida Gjindali, Helena A. Herrmann, Jean-Marc Schwartz, Giles N. Johnson, Pablo I. Calzadilla
Summary: Plants adjust their photosynthetic processes to adapt to fluctuating light in the environment. The interconnection of short-term and long-term photosynthetic responses presents a challenge in studying plant acclimation to light fluctuations. Mathematical modeling can help differentiate short-term regulatory responses from long-term acclimation responses, integrating physiological processes across different timescales.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Hongxia Xia, Ke Chen, Lilan Liu, Andelka Plenkovic-Moraj, Geng Sun, Yanbao Lei
Summary: Photosynthesis regulation is crucial for bryophytes' adaptation to terrestrial life. Flavodiiron proteins and cyclic electron flow play important roles in bryophytes' response to abiotic stresses. In this study, the photosynthetic performance of three moss species was examined under heat, dehydration, and fluctuating light. The results showed that resistant species had a higher cyclic electron flow, which was positively correlated with flavodiiron proteins. However, this positive correlation switched to negative in the other two species under severe stress conditions.
Article
Plant Sciences
Georgina E. Barratt, Erik H. Murchie, Debbie L. Sparkes
Summary: The research found that sugar beet production will be affected by climate change, with hotter and drier summers expected. While drought tolerance in sugar beet has been extensively studied, water use efficiency (WUE) has not received as much attention. An experiment was conducted to investigate the effects of fluctuating soil water deficits on WUE and whether sugar beet can acclimate to water deficits to increase WUE in the long term.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Yui Ozawa, Aiko Tanaka, Takamasa Suzuki, Daisuke Sugiura
Summary: Sink-source imbalance leads to the accumulation of nonstructural carbohydrates (NSCs) and downregulation of photosynthesis. However, it is still unclear whether NSC accumulation or nitrogen deficiency has a more direct effect on the decrease in steady-state maximum photosynthesis and photosynthetic induction, as well as the underlying gene expression profiles. In this study, we investigated the relationship between photosynthetic capacity and NSC accumulation induced by different treatments in soybean and common bean. The findings indicate that NSC accumulation decreases the maximum photosynthetic capacity and delays photosynthetic induction in both species. The downregulation of photosynthesis in soybean can be attributed to the coordinated downregulation of photosynthetic genes involved in various processes, including the Calvin cycle, Rubisco activase, photochemical reactions, and stomatal opening. Additionally, the sink-source imbalance may have affected the balance of sugar-phosphate translocators in chloroplast membranes, leading to starch accumulation. These results provide valuable insights into the mechanisms of photosynthetic downregulation and NSC accumulation, emphasizing the role of NSC accumulation in triggering downregulation rather than nitrogen deficiency.
PHYSIOLOGIA PLANTARUM
(2023)
Article
Plant Sciences
Pushan Bag
Summary: Photosynthesis is a major natural process that converts solar energy into chemical energy, carried out by a wide range of organisms from single cellular bacteria to higher plants. Different organisms possess different types of pigment protein complexes known as photosynthetic light-harvesting antennae, with simpler organisms typically having simple antennae and higher plants having complex systems for more efficient photosynthesis. The complexity of the antenna system is related to the ability of complex organisms to acclimate and adapt to fluctuating environmental conditions.
Article
Biochemistry & Molecular Biology
Yan-Bao Lei, Hong-Xia Xia, Ke Chen, Andelka Plenkovic-Moraj, Wei Huang, Geng Sun
Summary: Mosses can grow under fluctuating light conditions due to the roles of FLVs and CEF in regulating photosynthesis, especially when exposed to temperature stress. The coordination between FLV activity and CEF under fluctuating light and temperature stress is crucial for the photosynthetic acclimation of different moss species. The mosses with different light requirements show distinct FLV activity and CEF levels, indicating a species-specific response to fluctuating light and temperature stress.
Article
Cell Biology
Shun-Ling Tan, Xing Huang, Wei-Qi Li, Shi-Bao Zhang, Wei Huang
Summary: The study reveals that elevated atmospheric CO2 can mitigate PSI photoinhibition under fluctuating light by facilitating rapid oxidation of PSI and activating more electron acceptors.
Article
Biochemistry & Molecular Biology
Tomoyuki Furuya, Masato Saito, Haruka Uchimura, Akiko Satake, Shohei Nosaki, Takuya Miyakawa, Shunji Shimadzu, Wataru Yamori, Masaru Tanokura, Hiroo Fukuda, Yuki Kondo
Summary: Through co-expression network analysis, a new cambium-related regulatory module was identified, including the transcription factor BEH3, which plays a crucial role in the maintenance and stability of vascular stem cells. Further genetic analysis revealed that BEH3 and BES1 perform opposite functions in the regulation of vascular stem cells and the differentiation of vascular cells.
Article
Biochemistry & Molecular Biology
Ying Chen, Wataru Yamori, Ayumi Tanaka, Ryouichi Tanaka, Hisashi Ito
Summary: During leaf senescence, the degradation of photosystems and photosynthetic pigments proceeds in a coordinated manner, with the degradation of photosystem II core complexes regulated independently of the major chlorophyll degradation pathway. The study provides insights into the complex molecular mechanisms underlying the degradation of photosystems, which is an essential step during leaf senescence.
Article
Biochemistry & Molecular Biology
Namiko Yamori, Christopher P. Levine, Neil S. Mattson, Wataru Yamori
Summary: The optimum root zone temperature for plant growth and photosynthesis is affected by air temperature. This study found that the best growth conditions for lettuce plants can be achieved by optimizing the root zone temperature depending on the air temperature. Furthermore, plants grown under 30/25 degrees C air temperature showed better photosynthetic characteristics compared to those grown under 25/20 degrees C air temperature.
PLANT MOLECULAR BIOLOGY
(2022)
Article
Plant Sciences
Kazuma Sakoda, Shunsuke Adachi, Wataru Yamori, Yu Tanaka
Summary: This review discusses the processes and variations related to dynamic photosynthesis in crop plants under field environments. The study reveals that plant adaptations to different hydrological environments are explained by natural genetic variation in gas diffusion through stomata. The coordination of photosynthetic and stomatal dynamics is emphasized for optimizing the balance between carbon gain and water use efficiency. Future challenges include utilizing natural genetic variation and employing high-throughput phenotyping to evaluate the effects of genetic and environmental factors on dynamic photosynthesis.
JOURNAL OF EXPERIMENTAL BOTANY
(2022)
Correction
Plant Sciences
Leonardo Basso, Kazuma Sakoda, Ryouhei Kobayashi, Wataru Yamori, Toshiharu Shikanai
Article
Plant Sciences
Leonardo Basso, Kazuma Sakoda, Ryouhei Kobayashi, Wataru Yamori, Toshiharu Shikanai
Summary: This study demonstrates that overexpressing K+ exchange antiporter 3 (KEA3) and introducing Flv proteins can alleviate photodamage of photosystem I and enhance the rate of CO2 fixation under fluctuating light conditions.
Article
Plant Sciences
Yusuke Mizokami, Riichi Oguchi, Daisuke Sugiura, Wataru Yamori, Ko Noguchi, Ichiro Terashima
Article
Agronomy
Rintaro Kondo, Yu Tanaka, Tatsuhiko Shiraiwa
Summary: This study aimed to establish a model for predicting canopy temperature differences (CTD) in field-grown rice under different environmental conditions using meteorological data. The neural network model produced a high prediction accuracy and was used to simulate the CTD response of different rice cultivars. The results showed that CTD varied depending on the relative humidity and solar radiation, indicating the influence of environmental factors on canopy photosynthesis in rice.
PLANT PRODUCTION SCIENCE
(2022)
Article
Plant Sciences
Mohammad Jan Shamim, Akito Kaga, Yu Tanaka, Hiroshi Yamatani, Tatsuhiko Shiraiwa
Summary: The optimization of conventional yield parameters has led to a wider gap between food demand and crop yield, making the manipulation of photosynthetic processes essential for bridging the potential yield productivity. Efficient strategies for assessing crop photosynthetic capacity and identifying suitable targets for improving photosynthetic efficiencies are needed. In this study, the photosynthetic capacity of the Japanese soybean mini core collection was assessed, revealing a significant association between a single nucleotide polymorphism on chromosome 17 and variation in light-saturated photosynthesis. Exploration of plant germplasm was shown to be a useful strategy for unlocking the potential of resource use efficiencies for photosynthesis.
FRONTIERS IN PLANT SCIENCE
(2022)
Review
Plant Sciences
Yuchen Qu, Oliver Mueller-Cajar, Wataru Yamori
Summary: The thermal sensitivity of Rubisco activase is a contributing factor to crop failure under heat stress. Developing heat-tolerant Rubisco activase is crucial for improving crops and ensuring food security.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Kazuki Taniyoshi, Yu Tanaka, Shunsuke Adachi, Tatsuhiko Shiraiwa
Summary: Photosynthetic induction, influenced by CO2 supply, plays a crucial role in determining plant carbon gain and crop productivity. This study investigated the photosynthetic characteristics of three rice genotypes and identified various mechanisms for efficient CO2 supply during induction. These findings provide valuable insights for improving crop productivity in future breeding programs.
PHYSIOLOGIA PLANTARUM
(2022)
Article
Agronomy
Kota Nakajima, Yu Tanaka, Keisuke Katsura, Tomoaki Yamaguchi, Tomoya Watanabe, Tatsuhiko Shiraiwa
Summary: Above-ground biomass (AGB) is an important indicator of crop productivity. Destructive measurements of AGB are costly, while non-destructive estimations may not be suitable for diverse cultivars. This study evaluated a CNN-based method for estimating rice AGB using digital images of 59 diverse cultivars. The CNN model showed high accuracy in estimating AGB, but had a limitation in underestimating AGB for larger values. Further research could improve this limitation. Overall, the CNN-based method shows promise as a practical tool for monitoring crop AGB in diverse cultivars.
PLANT PRODUCTION SCIENCE
(2023)
Article
Plant Sciences
Christopher P. Levine, Sota Hayashi, Yoshihiro Ohmori, Miyako Kusano, Makoto Kobayashi, Tomoko Nishizawa, Ikusaburo Kurimoto, Saneyuki Kawabata, Wataru Yamori
Summary: This study found significant effects of root zone temperature on the growth and pigment content of red leaf lettuce. A root zone temperature of 25 degrees Celsius had the best growth performance in terms of shoot and root dry weight.