植物学报 ›› 2024, Vol. 59 ›› Issue (6): 0-0.DOI: 10.11983/CBB24037 cstr: 32102.14.CBB24037
• 研究论文 •
杨文丽1, 2, 3†, 李钊3†, 刘志铭2, 张志华3, 杨今胜2, 吕艳杰1, 2*, 王永军1, 2*
收稿日期:
2024-03-09
修回日期:
2024-05-07
出版日期:
2024-11-10
发布日期:
2024-06-11
通讯作者:
王永军, 吕艳杰
基金资助:
Wenli Yang1, 2, 3†, Zhao Li3†, Zhiming Liu2, Zhihua Zhang3, Jinsheng Yang2, Yanjie Lü1, 2*, Yongjun Wang1, 2*
Received:
2024-03-09
Revised:
2024-05-07
Online:
2024-11-10
Published:
2024-06-11
Contact:
Yongjun Wang, Yanjie Lü
Supported by:
摘要: 叶片作为作物光合器官, 其衰老进程对产量形成具有重要影响, 但叶片衰老与叶际微生物间的关系研究较少。为探讨玉米叶片衰老过程对叶际细菌群落的影响, 本研究以东北春玉米区3个不同熟期玉米品种(早熟品种黑科玉17, H17、中熟品种中单111, Z111、和晚熟品种沈玉21, S21)为试验材料, 从早熟品种开花期开始对3个玉米品种穗位叶进行5次取样, 测定衰老生理指标, 同时基于高通量测序技术测定叶际内源和外源细菌的群落组成。结果表明, 在生育后期, 中熟和晚熟品种叶含水率、POD和SOD活性显著高于早熟品种。在门水平, 蓝菌门(Cyanobacteria)是中熟和晚熟的特有菌门; 在属水平, 玉米叶片内外源共有细菌鞘氨醇单胞菌属(Sphingomonas)、甲基杆菌属(Methylobacterium)、异常球菌属(Deinococcus)相对丰度在IV和V时期显著降低, 而内源细菌链霉菌属(Streptomyces)和外源细菌P3OB-42属则在衰老后期显著富集, 三个品种变化趋势相似, 相对丰度差异显著。内外源细菌相对丰度存在显著差异, 前5位的外源细菌占60%以上, 而对内源细菌而言, 前5位仅占30%以上。可溶性糖含量、光合色素含量和SOD活性与细菌群落结构和丰富度显著相关。综上, 中熟和晚熟品种能有效延长叶片持绿期, 维持后期叶片生理活性, 延缓衰老。衰老对内源细菌群落组成和多样性的影响显著大于外源细菌, 不同熟期品种间存在显著分异的菌属, 且可溶性糖含量、光合色素含量和SOD活性是影响叶际细菌群落以及优势物种的关键因子。
杨文丽, 李钊, 刘志铭, 张志华, 杨今胜, 吕艳杰, 王永军. 不同熟期玉米叶片衰老特性及其对叶际细菌的影响. 植物学报, 2024, 59(6): 0-0.
Wenli Yang, Zhao Li, Zhiming Liu, Zhihua Zhang, Jinsheng Yang, Yanjie Lü, Yongjun Wang. Senescence Characteristics of Maize Leaves at Different Maturity Stages and Their Effect on Interleaf Bacteria. Chinese Bulletin of Botany, 2024, 59(6): 0-0.
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