Article
Horticulture
Liuli Song, Shaowei Liu, Haitao Yu, Zhifang Yu
Summary: The objective of this study was to investigate the regulatory mechanism of melatonin (MT) treatment on leaf yellowing of pak choi during storage at 20 degrees C. Results showed that 500 mu moL L-1 MT alleviated the yellowing process of pak choi by maintaining high leaf colour, chlorophyll content, chlorophyll fluorescence parameters, and extending the market life of pak choi. MT treatment also effectively reduced weight loss and respiration rate. The mechanisms behind MT's effects involved the regulation of chlorophyll and reactive oxygen species metabolism, membrane lipid degradation, and antioxidant capacity.
SCIENTIA HORTICULTURAE
(2023)
Article
Agronomy
Tingting Tan, Shenglan Li, Yuanfang Fan, Zhonglin Wang, Muhammad Ali Raza, Iram Shafiq, Beibei Wang, Xiaoling Wu, Taiwen Yong, Xiaochun Wang, Yushan Wu, Feng Yang, Wenyu Yang
Summary: This review discusses the impact of far-red light on plants, including the adjustment of photosynthetic electron transport and the path of light energy to improve plant photosynthetic capacity, as well as the regulation of leaf angle, plant height, and leaf area to capture more light energy.
Article
Plant Sciences
Shuilin Yuan, Yuan Wang, Die Hu, Weitong Zhu, Dong Xiao, Tongkun Liu, Xilin Hou, Ying Li
Summary: This study identified a new regulatory gene, BcNAC056, in pak choi that promotes leaf senescence by activating SAG12. Additionally, the interaction between BcNAC056 and BcWRKY1 was found to contribute to the activation of BcSAG12, thereby further enhancing leaf senescence.
PLANT AND CELL PHYSIOLOGY
(2023)
Article
Plant Sciences
Changwei Zhang, Qian Zhou, Wusheng Liu, Xiaoting Wu, Zhubo Li, Yuanyuan Xu, Ying Li, Takato Imaizumi, Xilin Hou, Tongkun Liu
Summary: This study found that ABA can accelerate the transcription of BrCO in pak choi by directly activating BrABF3, thus promoting flowering.
Article
Chemistry, Applied
Shan Wang, Jiayi Wang, Chen Li, Yaping Xu, Zhaoxia Wu
Summary: This study investigated the removal of residual pesticides from pak choi using ozonated water, finding high degradation rates of pesticides and a significant reduction in microbial colonies with slight decrease in vitamin C content. The pesticide degradation mechanism followed a first + first-order kinetic model, showing ozone had a more prominent effect on malathion degradation, providing a theoretical basis for controlling agricultural pesticide residues in household applications.
Article
Chemistry, Applied
Waleed Amjad Khan, Hairong Hu, Tracey Ann Cuin, Yuli Hao, Xuejie Ji, Jianjun Wang, Chunmei Hu
Summary: This study determined the metabolite composition of pak choi leaves, including organic acids, amino acids, and flavonoids. There were distinct variations in metabolite and flavonoid profiles between green and purple leaved varieties, with a higher accumulation of flavonoids in green leaved variety. This research provides novel insights into the nutritional value of pak choi, particularly its flavonoid content.
Article
Soil Science
Yufei Yu, Jia Li, Yang Song, Zhengyan Zhang, Songguo Yu, Meiling Xu, Yangyang Zhao
Summary: This study evaluated the effects of polyethylene (PE) and polypropylene (PP) microplastics on the growth of pak choi. The results showed that the toxic effects varied among different plastic types, concentrations, and particle sizes. PP microplastics, especially those with small particle sizes, had negative impacts on the growth and antioxidant capacity of pak choi. In contrast, PE exposure improved the activities of antioxidant enzymes in pak choi, potentially counteracting the negative effects. The findings also suggested that PP and PE may indirectly inhibit pak choi growth by reducing soil aeration.
APPLIED SOIL ECOLOGY
(2022)
Article
Agronomy
Rafa Tasnim, Yong-Jiang Zhang
Summary: Wild lowbush blueberries, despite previous studies showing low photosynthetic rates, were found to have significantly underestimated photosynthetic capacities when measured using big leaf chambers compared to small leaf chambers. This suggests that chamber size effects need to be considered in quantifying photosynthetic capacity for small-leaf crops.
Article
Plant Sciences
Fatemeh Rasouli, Ali Kiani-Pouya, Ayesha Tahir, Lana Shabala, Zhonghua Chen, Sergey Shabala
Summary: Superior salinity tolerance in halophytes is achieved through significantly faster stomatal opening and closure, the ability to discriminate K+ over Na+, and decoupling of CO2 assimilation from changes in stomatal aperture. Stomatal densities are intrinsically lower in halophytic species, and their stomatal responses to environmental stimuli are much faster compared to glycophytes. High maximum carboxylation rate of Rubisco (V-cmax) and higher rates of electron transport through photosystem II (J) contribute to the high photosynthetic rates and biomass productions in halophytic species under moderate salinity levels.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Engineering, Environmental
Hailong Liu, Jun Zhou, Min Li, Ruizhi Xia, Xiaozhi Wang, Jing Zhou
Summary: This study investigated the dynamic behaviors of newly deposited atmospheric heavy metals in the soil-pak choi system. The results showed that approximately 17-87%, 19-64%, and 43-84% of the Cu, Cd, and Pb in pak choi edible parts were contributed from the new depositions, respectively. Foliar uptake was found to be the key pathway of shoot bioaccumulation, and there were no significant differences in soil contribution between pak chois growing in 0.5-year and 1.5-year exposed soils. Additionally, soil aging resulted in a rapid decrease in the bioavailability of the deposited metals.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Genetics & Heredity
Ye Lin, Hualan Hou, Yuhang Zhang, Xilin Hou
Summary: The LBD family, particularly the BcAS2 gene, plays a crucial role in leaf development in pak choi, interacting with BcAS1-1/2 to establish the adaxial-abaxial polarity of lateral organs.
Article
Horticulture
Han-kyeol Park, Si-Hong Kim, Joo-Hwan Lee, Kyeong-Yeon Kim, Jeong-Eun Sim, Dong-Cheol Jang, Sung-Min Park
Summary: This study evaluated salt tolerance in 24 Korean native Pak Choi species and identified 'IT262109', 'IT279432', and 'IT185735' as genotypes with strong salt tolerance, suggesting their potential as parent varieties for enhancing salt tolerance in Pak Choi.
Article
Environmental Sciences
Yifan Huang, Jiahui Chen, Yangming Sun, Haixia Wang, Junyi Zhan, Yanni Huang, Jianwen Zou, Lu Wang, Nana Su, Jin Cui
Summary: Gypsum is commonly used to improve soil quality and nutrient supply, as well as alleviate cadmium toxicity and accumulation in plants. Application of gypsum under cadmium stress promotes plant growth, reduces oxidative stress, decreases cadmium accumulation, and enhances photosynthesis.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biotechnology & Applied Microbiology
Raymond J. Ritchie, Suhailar Sma-Air, John W. Runcie
Summary: A Reflectance Absorptance Transmittance (RAT) meter was used to measure the absorptance of algal films on glass fiber filter disks for PAM fluorometry. The results showed that the absorptance saturation was easily achieved in blue light but not in green, red or white light.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Agriculture, Multidisciplinary
Pengpeng Mao, Famin Duan, Yinjian Zheng, Qichang Yang
Summary: This study found that different blue and UV-A light wavelengths significantly improved the growth and water content of two cultivars of pak-choi. The treatments also led to higher levels of soluble protein, total phenolics, and total flavonoids. Different wavelengths of light treatments also affected the content of other healthy compounds.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)