Article
Plant Sciences
Diego Ortiz, Maria G. Salas-Fernandez
Summary: This study identified genes/genomic regions that control sorghum photosynthetic capacity under water-limiting conditions and discovered candidate genes related to stress signaling, oxidative stress protection, hormonal response to stress, and dehydration protection. These findings provide new insights into the natural variation and genetic control of sorghum's response to drought stress, with the goal of improving its adaptation and productivity under water stress scenarios.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
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
Kazuma Sakoda, Kazuki Taniyoshi, Wataru Yamori, Yu Tanaka
Summary: Drought stress significantly reduced the maximum CO2 assimilation rate in soybean but not in rice. Under drought conditions, both crops showed an increase in A after a step increase in light, followed by a gradual decrease in A, resulting in the significant reduction of steady-state A in both rice and soybean. Additionally, drought stress delayed photosynthetic induction in both crops, despite having a relatively small impact on maximum A.
PHYSIOLOGIA PLANTARUM
(2022)
Article
Agronomy
Moon-Sub Lee, Ryan A. Boyd, Donald R. Ort
Summary: The experiment showed that under fluctuating light conditions, C-4 bioenergy grass species assimilated more carbon than C-3 species, with both types assimilating approximately 16% less carbon than expected based on steady state measurements. There was little diversity in the response to fluctuating light among C-3 species, while differences among the four NADP-ME species in C-4 species were evident. The diversity observed among C-4 species in response to fluctuating light suggests that targeting photosynthetic efficiency could increase C-4 bioenergy grass productivity.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2022)
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
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)
Review
Genetics & Heredity
Olivia L. Johnson, Raymond Tobler, Joshua M. Schmidt, Christian D. Huber
Summary: Recent studies have shown that cosmopolitan Drosophila populations exhibit seasonal fluctuation in allele frequencies at hundreds to thousands of genetic loci, which has raised questions about how genetic variation is maintained in natural populations. This has led to further exploration of the drivers, dynamics, and genome-wide impacts of fluctuating selection through theoretical and experimental studies. In this review, the latest evidence for multilocus fluctuating selection in Drosophila and other taxa is evaluated, with a focus on potential genetic and ecological mechanisms that maintain these loci and their effects on neutral genetic variation.
TRENDS IN GENETICS
(2023)
Article
Plant Sciences
Ying-Jie Yang, Qi Shi, Hu Sun, Ren-Qiang Mei, Wei Huang
Summary: This study demonstrated that different ontogenetic stages of leaves in epiphytic orchid Dendrobium officinale utilize different photoprotective mechanisms to deal with fluctuating light. Mature leaves use water-water cycle (WWC) to prevent over-reduction of PSI, while young leaves enhance cyclic electron flow (CEF) around PSI to compensate for the lack of WWC, thus avoiding uncontrolled PSI over-reduction induced by 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)
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
Plant Sciences
Ze Wei, Fengying Duan, Xuezhen Sun, Xianliang Song, Wenbin Zhou
Summary: Long-term fluctuating light conditions inhibit rice growth, affecting processes such as PSI and PSII inhibition, reduced ATP synthase activity, and NPQ regulation.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Plant Sciences
Xiao-Qian Wang, Zhi-Lan Zeng, Zi-Ming Shi, Ji-Hua Wang, Wei Huang
Summary: Photosynthetic efficiency varies among different rose genotypes, with stomatal conductance playing a crucial role in determining the efficiency under fluctuating light conditions. This study compared the photosynthetic performance of two modern rose cultivars and one old Chinese rose plant, revealing the importance of mesophyll conductance in dynamic photosynthesis and its potential for improving photosynthetic efficiency in rose cultivars.
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
Forestry
Huixing Kang, Hajime Tomimatsu, Ting Zhu, Yixin Ma, Xiruo Wang, Yan Zhang, Yanhong Tang
Summary: The debate over whether tree leaves in shady environments have higher photosynthetic induction efficiency (IE) than those in sunny environments and how shade tolerance and light environment contribute to photosynthesis dynamics has long been ongoing. In this study, we investigated the photosynthetic responses of six tree species with different shade tolerance levels to simulated changes in light intensity. We found that species with higher relative shade tolerance (RST) had significantly higher IE. The impact of light environment on IE varied among different species, and a trade-off existed between IE and steady-state photosynthetic rates. These findings provide new insights into the adaptation strategy of understory seedlings in sunfleck environments.
Article
Plant Sciences
Kazuma Sakoda, Kazuki Taniyoshi, Wataru Yamori, Yu Tanaka
Summary: Drought stress significantly reduced the maximum CO2 assimilation rate in soybean but not in rice. Under drought conditions, both crops showed an increase in A after a step increase in light, followed by a gradual decrease in A, resulting in the significant reduction of steady-state A in both rice and soybean. Additionally, drought stress delayed photosynthetic induction in both crops, despite having a relatively small impact on maximum A.
PHYSIOLOGIA PLANTARUM
(2022)
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)
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
Shunsuke Adachi, Matt Stata, Duncan G. Martin, Shifeng Cheng, Hongbing Liu, Xin-Guang Zhu, Rowan F. Sage
Summary: Flaveria is an important model for understanding C-4 plant evolution. Through studying different Flaveria species, this research discovered functional clusters and identified certain characteristics that may facilitate the evolution of the full C-4 photosynthetic pathway.
Article
Multidisciplinary Sciences
Taiichiro Ookawa, Tomohiro Nomura, Eri Kamahora, Mingjin Jiang, Yusuke Ochiai, Ahmad Fahim Samadi, Takuya Yamaguchi, Shunsuke Adachi, Keisuke Katsura, Takashi Motobayashi
Summary: Severe lodging caused by strong typhoons has become increasingly common in recent climate change. This study highlights the importance of identifying and pyramiding quantitative trait loci and responsible genes associated with strong culm in order to develop high-yielding varieties with superior lodging resistance. The results demonstrate that pyramiding strong culm genes can significantly enhance culm diameter, culm strength, and spikelet number, leading to improved yield and lodging resistance in high-yielding varieties.
SCIENTIFIC REPORTS
(2022)
Article
Agronomy
Tomohiro Nomura, Satoshi Ohkubo, Atsushi J. Nagano, Ahmad Fahim Samadi, Shunsuke Adachi, Taiichiro Ookawa
Summary: This study reveals varietal differences and factors affecting leaf sheath reinforcement in rice. Thicker leaf sheaths and delayed senescence were found in 'Chugoku 117' compared to 'Koshihikari'. The number of living leaf sheaths strongly correlated with bending moment at breaking with leaf sheath, suggesting leaf sheath reinforcement contributes to stem strength in rice.
PLANT PRODUCTION SCIENCE
(2023)
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.
Article
Endocrinology & Metabolism
Atsuko Miyagi, Kazuhisa Mori, Toshiki Ishikawa, Satoshi Ohkubo, Shunsuke Adachi, Masatoshi Yamaguchi, Taiichiro Ookawa, Toshihisa Kotake, Maki Kawai-Yamada
Summary: Metabolic analysis of rice bc mutants can elucidate the functions of causative genes and improve cell wall components, potentially benefiting livestock feed or bioethanol production.
