Article
Agronomy
Nina V. Terletskaya, Malika Erbay, Aigerim N. Zorbekova, Maria Yu Prokofieva, Luizat T. Saidova, Aigerim Mamirova
Summary: This study compared the effects of osmotic, salt, and combined stress on the morphology and anatomy of photosynthetic organs in young quinoa plants. The results showed that salt stress of 100 to 200 mM NaCl did not have a critical impact on the growth of quinoa plants, while the plants were able to withstand salt stress at an intensity of 300 mM NaCl. However, adaptation mechanisms were violated at a salt stress intensity of 200 mM NaCl, and significant changes in water balance were observed at 300 mM NaCl, possibly due to damage to cell structures.
Article
Plant Sciences
Wenshi Hu, Manli Zhao, Shanshan Zhang, Yinshui Li, Jing Dai, Chiming Gu, Xiaoyong Li, Lu Yang, Lu Qin, Xing Liao
Summary: The coordinated increase in the photosynthetic rate and photosynthetic nitrogen use efficiency is crucial for improving crop yield and nitrogen utilization efficiency. By measuring the leaf functional nitrogen partitioning in Brassica napus genotypes under different nitrogen rates, it was found that optimizing nitrogen allocation by regulating nitrogen storage content can promote the synchronous increase in photosynthetic rate and photosynthetic nitrogen use efficiency.
PHYSIOLOGIA PLANTARUM
(2023)
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
Lucelio Mendes Ferreira, Juliane Maciel Henschel, Janaine Juliana Vieira de Almeida Mendes, Daniel da Silva Gomes, Sabrina Kelly dos Santos, Adriano Salviano Lopes, Damiana Justino Araujo, Diego Silva Batista
Summary: This study aimed to evaluate the effects of the NO donor SNP on the morphophysiology and sugar content of beets under moderate and severe drought stresses, as well as its role in the recovery of plants after re-watering. The results showed that SNP alleviated moderate drought stress in beets.
JOURNAL OF PLANT GROWTH REGULATION
(2023)
Article
Horticulture
Xunzhong Zhang, Zachary Taylor, Mike Goatley, Kehua Wang, Isabel Brown, Kelly Kosiarski
Summary: This study investigated the effects of seaweed extract-based biostimulant UtilizeVR on nitrogen metabolism and root viability in creeping bentgrass. The results showed that foliar application of UtilizeVR improved turf quality, leaf color, chlorophyll content, and net photosynthetic rate. Additionally, UtilizeVR increased nitrate reductase activity and root biomass, length, surface area, and volume, as well as improved root viability. Therefore, biweekly foliar application of UtilizeVR at a concentration of 58 μL can be considered an effective approach for improving creeping bentgrass performance during summer stress.
Article
Plant Sciences
Feng Qu, Tieli Peng, Yuanjie Jia, Mingfei Yang, Xiaole Meng, Shuaige Mao, Daoming Zhou, Xiaohui Hu
Summary: Nitrogen supply and leaf nitrogen allocation play important roles in crop growth and development. This study reveals that increasing nitrogen concentration and ammonium proportion can improve photosynthetic capacity and stress resistance in cucumber under low-temperature stress.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2022)
Review
Cell Biology
Marine Messant, Anja Krieger-Liszkay, Ginga Shimakawa
Summary: Photosynthesis relies on efficient regulation mechanisms to prevent damage to the photosynthetic apparatus and aid in acclimation to changing environments. Protein movements, supercomplex formation, and changes in oligomerization states play crucial roles in these regulatory processes.
Article
Plant Sciences
Zhang-Ying Lei, Heng Wang, Ian J. Wright, Xin-Guang Zhu, Ulo Niinemets, Zi-Liang Li, Dong-Sheng Sun, Ning Dong, Wang-Feng Zhang, Zhong-Li Zhou, Fang Liu, Ya-Li Zhang
Summary: The study found that domesticated cotton genotypes showed higher nitrogen content per mass, net photosynthesis under saturated light, and photosynthetic nitrogen use efficiency compared with wild genotypes. This suggests that more nitrogen allocation to photosynthetic machinery has increased the net photosynthesis under cotton domestication, highlighting the potential for future improvements in nitrogen use efficiency to enhance photosynthesis in cotton.
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Plant Sciences
Cuicui You, Peng Xu, Yizhe He, Huayun Wang, Jian Ke, Haibing He, Liquan Wu
Summary: In recent years, heat stress has become a serious threat to rice production in China. This study investigated the effects of different nitrogen forms on heat stress tolerance in indica rice. The results showed that the application of mixed N significantly increased yield by improving photosynthetic characteristics, leaf nitrogen content, and antioxidant enzyme activities. The use of mixed N also reduced reactive oxygen species and mitigated damage caused by high temperature. The findings suggest that the application of mixed N can effectively alleviate the adverse consequences of heat stress in rice.
ACTA PHYSIOLOGIAE PLANTARUM
(2023)
Article
Agronomy
Chunhui Li, Yonglan Chang, Yongli Luo, Wenqian Li, Min Jin, Yuanyuan Wang, Haixing Cui, Shufang Sun, Yong Li, Zhenlin Wang
Summary: Appropriate nitrogen fertilization positively affects wheat yield, but excessive nitrogen leads to decreased stem resistance and yield. This study aimed to understand why high nitrogen fertilization increases the risk of stem lodging and how it regulates carbon allocation to balance yield and stem quality. The results showed that while nitrogen increased soluble sugar content in leaves, stems couldn't fully utilize the carbohydrates produced by leaves to synthesize sufficient lignin and cellulose, resulting in poor stem quality.
FIELD CROPS RESEARCH
(2023)
Article
Plant Sciences
Zhihuan Zhang, Bili Cao, Zijing Chen, Kun Xu
Summary: This study found that under low-nitrogen stress, tomato plants grafted onto high-nitrogen efficient rootstock exhibited enhanced growth but reduced photosynthetic efficiency, while showing improved nitrogen absorption and utilization, leading to reduced root damage caused by excessive accumulation of ammonium-nitrogen.
JOURNAL OF PLANT GROWTH REGULATION
(2022)
Article
Forestry
Jiamei Wu, Zuomin Shi, Shun Liu, Mauro Centritto, Xiangwen Cao, Miaomiao Zhang, Guangdong Zhao
Summary: Elevational variations and sex differences drive the diversification of photosynthetic capacity in plants, but the mechanisms are poorly understood. Photosynthetic capacity in Seabuckthorn plants generally increases with elevation, with mesophyll conductance playing a key role. Leaf nitrogen allocations are crucial for photosynthetic nitrogen-use efficiency.
Article
Plant Sciences
Anne Marmagne, Celine Masclaux-Daubresse, Fabien Chardon
Summary: This study analyzed the impact of environmental stresses on nitrogen fluxes within plants during seed filling and provided a schematic representation of the major factors that regulate the balance between nitrogen remobilization and nitrogen uptake under stress and control conditions.
JOURNAL OF PLANT PHYSIOLOGY
(2022)
Article
Environmental Sciences
Guangjin Wu, Jiahui Cheng, Junjun Wei, Jing Huang, Yunfei Sun, Lu Zhang, Yuan Huang, Zhou Yang
Summary: The mixotrophic Ochromonas gloeopara shows strong tolerance and capacity to remove cadmium (Cd), with the increase of phosphorus concentration enhancing its removal capacity.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Clare Brewster, Nathalie Fenner, Felicity Hayes
Summary: The interaction between nitrogen storage and translocation, senescence, and late phase photosynthesis is critical to the post-anthesis grain fill period in wheat. However, the effect of ozone on nitrogen dynamics within the wheat plant is not well understood. This study found that chronic ozone exposure triggered earlier senescence and reduced chlorophyll content in lower leaves. High ozone levels increased residual nitrogen levels and decreased C:N ratios, while extra nitrogen fertilization at anthesis mitigated these effects. Ozone had no effect on nitrogen translocation within the plant.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Zhengzhen Li, Jian Yang, Bo Shang, Yansen Xu, John J. Couture, Xiangyang Yuan, Kazuhiko Kobayashi, Zhaozhong Feng
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)