AUTHOR=Wang Ling , Liu Miyang , Luo Zheng , Chen Yulong , Qi Yingwei , Ye Mingqiang , Chen Feiping , Dai Fanwei 

TITLE=Effect of modified atmosphere package on attributes of sweet bamboo shoots after harvest

JOURNAL=Frontiers in Plant Science

VOLUME=15

YEAR=2024

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2024.1431097

DOI=10.3389/fpls.2024.1431097

ISSN=1664-462X

ABSTRACT=<p>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<sub>2</sub> and the decrease in O<sub>2</sub> 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 <italic>PePAL3/4</italic>, <italic>PeCAD</italic>, <italic>Pe4CL5, PeC4H, PeCCOAOMT, PeCOMT</italic>, cellulose synthase <italic>PeCESA1</italic>, and related transcription factors <italic>PeSND2, PeKNAT7, PeMYB20, PeMYB63</italic>, and <italic>PeMYB85</italic> 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.</p>