
Screening of disease-resistant germplasm resources of Pinus massoniana and preliminary SNP analysis based on liquid chip
ZHU Jingyi, LIU Qinghua, ZHOU Zhichun, WANG Yangdong, LUO Dinghui
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2025, Vol. 49 ›› Issue (5) : 1-10.
Screening of disease-resistant germplasm resources of Pinus massoniana and preliminary SNP analysis based on liquid chip
【Objective】Pinus massoniana (masson pine), a native conifer species endemic to southern China’s mountainous regions, holds significant economic and ecological value. However, the spread of pine wood nematode disease (PWD) has necessitated breeding programs to enhance its resistance, and to provide critical germplasm for PWD-resistant breeding. 【Method】A total of 725 half-sib progenies (from 51 families) derived from PWD-resistant P. massoniana trees were collected across five provinces (cautonomous region). Resistance was assessed via artificial inoculation with 5 000 pine wood nematodes per seedling. Genome-wide association studies (GWAS) were performed by integrating phenotypic data from inoculation assays with targeted sequencing data generated using a 101.6 K liquid-phase probe panel. 【Result】Four highly resistant and ten resistant families were identified as valuable germplasm resources. Statistical analyses revealed that mixed linear model (MLM) obtained five significant SNPs (phenotypic variance explained, PVE 7.69%-11.24%). General linear model (GLM) obtained four significant SNPs (total PVE 5.96%). BLINK model obtained eleven significant SNPs (PVE 12.86%-26.43%). Nine candidate genes were functionally annotated, including P450 family proteins, pectin methylesterase inhibitors (PMEIs), and others. These genes likely regulate post-invasion immune responses by modulating cell wall structure and membrane protein recognition. 【Conclusion】Fourteen P. massoniana resistant families can serve as valuable breeding materials for disease-resistant varieties. Nine candidate disease-resistant genes identified through GWAS will contribute to elucidating the disease resistance mechanisms of P. massoniana and facilitating early selection of disease-resistant varieties.
masson pine(Pinus massoniana) / pine wilt disease (PWD) / genome-wide association study / resistance genes
[1] |
季孔庶, 王章荣, 陈天华, 等. 马尾松扦插繁殖年龄效应及继代扦插复壮效果[J]. 浙江林学院学报, 1999, 16(4):341-345.
|
[2] |
孙永春. 南京中山陵发现松材线虫[J]. 江苏林业科技, 1982, 9(4):47-27.
|
[3] |
叶建仁. 松材线虫病在中国的流行现状、防治技术与对策分析[J]. 林业科学, 2019, 55(9):1-10.
|
[4] |
徐将. 松材线虫病疫木就地覆盖熏蒸除害处理技术研究[J]. 现代农业科技, 2017(12):150-151.
|
[5] |
颜学武. 花绒寄甲人工饲料及林间应用技术研究[D]. 南京: 南京林业大学, 2014.
|
[6] |
陈元生, 黄燕洪, 周满生. 松材线虫病疫木伐桩除害处理技术概述[J]. 林业科技开发, 2014, 28(1): 12-14.
|
[7] |
|
[8] |
|
[9] |
|
[10] |
|
[11] |
|
[12] |
|
[13] |
|
[14] |
|
[15] |
|
[16] |
|
[17] |
|
[18] |
|
[19] |
徐六一, 户田忠雄. 马尾松松材线虫抗性候补木的选拔及评价研究[J]. 安徽农业科学, 2006, 34(17):4303-4304.
|
[20] |
|
[21] |
|
[22] |
|
[23] |
|
[24] |
|
[25] |
|
[26] |
|
[27] |
|
[28] |
|
[29] |
|
[30] |
|
[31] |
|
[32] |
|
[33] |
|
[34] |
徐六一. “抗松材线虫病马尾松种源及抗性育种技术研究” 通过验收[J]. 安徽林业科技, 2015, 41(3):20.
|
[35] |
郝焰平, 徐六一, 姜春武, 等. 安徽省适生马尾松优良种源子代抗松材线虫病评价及生长性状研究[J]. 江西农业学报, 2019, 31(3):41-45.
|
[36] |
|
[37] |
|
[38] |
|
[39] |
|
[40] |
|
[41] |
宣云, 赵竑绯, 郭肖颖, 等. 植物细胞壁重构酶木葡聚糖内转糖苷酶/水解酶(XTH)的研究进展[J]. 中国农学通报, 2016, 32(18):83-88.
|
[42] |
|
[43] |
|
[44] |
|
/
〈 |
|
〉 |