Tender bamboo shoots undergo rapid senescence that influences their quality and commercial value after harvest. In this study, the tender sweet bamboo shoots ('Wensun') were packed by a passive modified atmosphere packaging (PMAP) to inhibit the senescence process, taking polyethylene package as control. The increase in CO and the decrease in O gas concentrations in the headspace atmosphere of the packages were remarkably modified by PMAP treatments. The modified gas atmosphere packaging inhibited the changes in firmness, as well as the content of cellulose, total pectin, and lignin in the cell walls of bamboo shoots. The enzymatic activities of cellulase, pectinase, and polygalacturonase that act on cell wall polysaccharides, and phenylalanine ammonia lyase, cinnamyl alcohol dehydrogenase, peroxidase, and laccase regulating the lignin biosynthesis were modified by PMAP treatment different from control during storage. The expression levels of the lignin biosynthesis genes , , , cellulose synthase , and related transcription factors , and were clearly regulated. These results suggest that PMAP efficiently retards the changes in lignin and cell wall polysaccharides, thus delaying the senescence of tender sweet bamboo shoots during storage.
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http://dx.doi.org/10.3389/fpls.2024.1431097 | DOI Listing |
J Environ Manage
December 2024
China National Bamboo Research Center, Key Laboratory of State Forestry and Grassland Administration on Bamboo Forest Ecology and Resource Utilization, Hangzhou, Zhejiang, 310012, China; National Long-term Observation and Research Station for Forest Ecosystem in Hangzhou-Jiaxing-Huzhou Plain, Hangzhou, Zhejiang, 310012, China.
Bamboo forests are crucial ecosystems and provide essential ecological and economic services in both tropical and subtropical regions. Soil phosphorus (P), a vital nutrient for plant growth, is fundamental to the productivity and health of bamboo forests. However, the microbial mechanisms through which management practices affect soil P processes in bamboo forests remain poorly understood.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China; Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Centre for Bamboo and Rattan, Beijing 100102, China. Electronic address:
Moso bamboo is renowned for its exceptional growth rate, driven by rapid cell proliferation and elongation in culm internodes. This study uncovers the novel role of brassinosteroids (BRs) in regulating bamboo shoot growth, revealing a previously unknown negative correlation between BR levels and growth rates. Notably, we identify BRASSINAZOLE RESISTANT1 (BZR1) acts as a key transcription factor in BR signaling, governing the expression of genes involved in BR biosynthesis and growth.
View Article and Find Full Text PDFProc Biol Sci
December 2024
State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, People's Republic of China.
Arbuscular mycorrhizal fungi (AMF), as microbial mutualists, interact with various microbial taxa, including pathogens, and significantly shape the ecology and evolution of their host species. However, how AMF and pathogens jointly or independently affect plant traits and nitrogen uptake remains unclear. Here, we conducted a factorial experiment with three AMF treatments (AMF-free-control, , and a mixture of AMF species of and ), four plant-pathogen pairs, each under two pathogen treatments (one pathogen and a pathogen-free control).
View Article and Find Full Text PDFJ Exp Bot
December 2024
Lab of Plant Cell Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China.
In higher plants, SWEET genes play a crucial role in source-sink carbohydrate partitioning. Dendrocalamus farinosus is an economic bamboo species because of its high fiber content and rapid growth. The transportation of photosynthetic products is essential for bamboo growth.
View Article and Find Full Text PDFFront Plant Sci
November 2024
The Research Centre for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing, China.
The imbalanced fertilization and the consequential deterioration on the rhizosphere microbial community (RMC) were two potential reasons for the quick yielding degradation of (Lei-bamboo), a high-value shoot-oriented bamboo. However, most research only focused on nitrogen, phosphorus, and potassium; the studies on the dynamics of other nutrients, such as calcium and magnesium; and their driving mechanisms, lags far behind. Thus, Lei-bamboo fields of different mulching and recovery ages were selected to investigate the dynamics of calcium and magnesium in both soil and bamboo tissue, and to explore their relationship to RMC composition and network patterns.
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