Evaluation of resistance to foot rot and analysis of disease resistance related indexes of 60 sweet potato germplasm resources

doi:10.3969/j.issn.1004-1524.20231410

Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (7): 1616-1625.DOI: 10.3969/j.issn.1004-1524.20231410

• Plant Protection • Previous Articles Next Articles

Evaluation of resistance to foot rot and analysis of disease resistance related indexes of 60 sweet potato germplasm resources

HAN Qingyu¹(), CHENG Linrun², LI Yuehong³, QIU Zhiling⁴, HOU Meng⁵, LOU Binggan¹^,^*()

1. Institute of Biotechnology, Zhejiang University, Hangzhou 310058,China
2. Jinhua Academy of Agricultural Sciences, Jinhua 321017, Zhejiang,China
3. Plant Protection Station of Jinhua City, Jinhua, 321017, Zhejiang, China
4. Hangzhou Lin’an Plant Quarantine Station, Hangzhou 311300, China
5. Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai District, Xuzhou 221131, Jiangsu, China

Received:2023-12-20 Online:2024-07-25 Published:2024-08-05

Abstract

Abstract:

Foot rot of sweet potato is the main disease of sweet potato in Zhejiang Province in recent years, which seriously affects the yield and quality of sweet potato. The purpose of this study was to explore sweet potato varieties with high resistance and to explore the characteristics of resistance-related physiological indexes and resistance-related genes, so as to provide scientific basis for the improvement of sweet potato varieties. The resistance to foot rot of 60 sweet potato germplasm resources was determined by wound inoculation method. The representative resistant and susceptible sweet potato varieties were selected to infect the Phomopsis destruens and the differences in the activities of antioxidant enzymes, malondialdehyde (MDA) content and the expression levels of resistance-related genes were analyzed. The results showed that among the 60 sweet potato germplasm resources, 3 varieties were highly resistant to the disease, including Xu D1-26, Xu D10-139, and J7-44. Meanwhile, 10 resistant, 18 susceptible and 29 highly susceptible varieties were identified, respectively. Moreover, the resistance level of sweet potato to foot rot was related to the antioxidant capacity, membrane lipid peroxidation level and jasmonic acid signaling pathway regulation of sweet potato. We found that the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) in highly resistant varieties were significantly increased compared to highly susceptible varieties. By 120 hours post inoculation (hpi), the activities of POD and SOD in highly resistant varieties were 1.81 times and 3.75 times higher than those in highly susceptible varieties, and the activity of CAT in highly resistant varieties was 2.93 times higher by 48 hpi. However, the MDA content of highly resistant varieties was significantly lower than that of highly susceptible varieties. Quantitative RT-PCR analysis showed that expression levels of the resistance-related genes IbWRKY1, IbBBX24 and IbNAC1 were up-regulated by 2.72, 3.15 and 1.91 times in highly resistant varieties compared with highly susceptible varieties at 168 hpi.

Key words: sweet potato, germplasm resource, Phomopsis destruens, resistance evaluation, resistance index

CLC Number:

S531

HAN Qingyu, CHENG Linrun, LI Yuehong, QIU Zhiling, HOU Meng, LOU Binggan. Evaluation of resistance to foot rot and analysis of disease resistance related indexes of 60 sweet potato germplasm resources[J]. Acta Agriculturae Zhejiangensis, 2024, 36(7): 1616-1625.

Figures/Tables 6

References 27

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病级 Grade of disease	标准 Standard
0	无病斑Without lesion
1	0 cm<病斑长度≤3 cm 0 cm<Lesion length≤3 cm
3	3 cm<病斑长度≤6 cm 3 cm<Lesion length≤6 cm
5	病斑长度>6 cm Lesion length>6 cm

病级 Grade of disease	标准 Standard
0	无病斑Without lesion
1	0 cm<病斑长度≤3 cm 0 cm<Lesion length≤3 cm
3	3 cm<病斑长度≤6 cm 3 cm<Lesion length≤6 cm
5	病斑长度>6 cm Lesion length>6 cm

引物 Primers	引物序列(5’-3’) Primer sequences(5’-3’)
β-Actin-F	AGCAGCATGAAGATTAAGGTTGTAGCAC
β-Actin-R	TGGAAAATTAGAAGCACTTCCTGTGAAC
IbBBX24-Q-F	GAGCCACAGCCACCGAAAC
IbBBX24-Q-R	AGGTCATCAACGGCCCAAG
IbWRKY1-F	GGAATTGAGATGGCTGTAGAGTTGTTG
IbWRKY1-R	GAAAACCCACTAACTTGCGGCTGAGA
IbNAC1-F	CGGCCGGGGATACAAATTTGTAAGCTT
IbNAC1-R	GAATCGGAATCCCGGCGGCATCTC

引物 Primers	引物序列(5’-3’) Primer sequences(5’-3’)
β-Actin-F	AGCAGCATGAAGATTAAGGTTGTAGCAC
β-Actin-R	TGGAAAATTAGAAGCACTTCCTGTGAAC
IbBBX24-Q-F	GAGCCACAGCCACCGAAAC
IbBBX24-Q-R	AGGTCATCAACGGCCCAAG
IbWRKY1-F	GGAATTGAGATGGCTGTAGAGTTGTTG
IbWRKY1-R	GAAAACCCACTAACTTGCGGCTGAGA
IbNAC1-F	CGGCCGGGGATACAAATTTGTAAGCTT
IbNAC1-R	GAATCGGAATCCCGGCGGCATCTC

来源 Resource	名称 Name	类型 Typle	病情指数DI				抗性等级RG
来源 Resource	名称 Name	类型 Typle	14 d	21 d	28d	42 d	28 d	42 d
金华市农业科学研究院	金20-17 Jin20-17	淀粉型Starch type	0	2	2	6	HR	R
Jinhua Academy of	济薯26 Jishu26	鲜食型Fresh-eating type	0	2	8	10	R	R
Agricultural Sciences	薯绿1号Shulv 1	菜用型Vegetable use type	2	2	8	12	R	S
	金徐薯69 Jinxushu 69	鲜食型Fresh-eating type	4	8	12	16	S	S
	金21-16新苗Jin21-16xin	淀粉型Starch type	0	10	14	22	S	HS
	金20-3 Jin20-3	淀粉型Starch type	4	8	16	22	S	HS
	金20-6 Jin20-6	淀粉型Starch type	4	6	18	22	S	HS
	金16S1-39 Jin16S1-39	淀粉型Starch type	2	8	22	22	HS	HS
	金徐薯22 Jinxushu 22	淀粉型Starch type	2	12	18	24	S	HS
	金18S3-18 Jin18S3-18	淀粉型Starch type	4	10	14	26	S	HS
	金17A-22 Jin17A-22	淀粉型Starch type	6	14	24	30	HS	HS
	金18S2-64 Jin18S2-64	淀粉型Starch type	4	12	22	30	HS	HS
	金徐薯67 Jinxushu 67	淀粉型Starch type	0	6	18	32	S	HS
	烟薯25 Yanshu 25	鲜食型Fresh-eating type	2	14	20	34	S	HS
	金徐薯23 Jinxushu 23	淀粉型Starch type	4	10	12	34	S	HS
	金21-16假植苗Jin21-16jia	淀粉型Starch type	8	16	26	40	HS	HS
	金薯926 Jinshu926	鲜食型Fresh-eating type	6	14	34	42	HS	HS
	金18S4-2 Jin18S4-2	淀粉型Starch type	8	10	20	44	HS	HS
	金18S1-14 Jin18S1-14	淀粉型Starch type	8	18	34	50	HS	HS
	金17A-39 Jin17A-39	淀粉型Starch type	0	16	36	54	HS	HS
	济薯21 Jishu 21	淀粉型Starch type	0	16	38	62	HS	HS
	浙薯13 Zheshu 13	鲜食型Fresh-eating type	18	28	46	70	HS	HS
徐州农业科学研究所	J7-44	兼用型Dual-purpose type	0	0	0	0	HR	HR
Xuzhou Institute of	徐D10-139 Xu D10-139	兼用型Dual-purpose type	0	0	0	0	HR	HR
Agricultural Sciences	徐D1-26 Xu D1-26	兼用型Dual-purpose type	0	0	4	4	HR	HR
	徐D1-248 Xu D1-248	兼用型Dual-purpose type	0	0	2	6	HR	R
	徐42 Xu 42	淀粉型Starch type	0	0	4	6	HR	R
	徐D6-118 Xu D6-118	兼用型Dual-purpose type	0	0	4	8	HR	R
	徐D11-80 Xu D11-80	兼用型Dual-purpose type	0	2	8	8	R	R
	徐E21-21 Xu E21-21	兼用型Dual-purpose type	0	0	6	8	R	R
	徐F10-311 XuF10-311	兼用型Dual-purpose type	0	2	6	8	R	R
	徐D1-95 Xu D1-95	兼用型Dual-purpose type	2	6	8	8	R	R
	徐紫12 Xuzi12	高花青素High anthocyanin	0	6	8	10	R	R
	徐D6-111 Xu D6-111	兼用型Dual-purpose type	0	2	10	12	R	S
	徐41 Xu 41	淀粉型Starch type	4	6	10	12	R	S
	徐F10-295 Xu F10-295	兼用型Dual-purpose type	2	8	10	14	R	S
	徐D6-140 Xu D6-140	兼用型Dual-purpose type	0	8	10	14	R	S
	徐D6-24 Xu D6-24	兼用型Dual-purpose type	0	0	8	16	R	S
	徐紫11 Xuzi 11	高花青素High anthocyanin	0	2	12	16	S	S
	徐紫7 Xuzi 7	高花青素High anthocyanin	0	4	8	16	R	S
	徐D11-49 Xu D11-49	兼用型Dual-purpose type	0	10	14	16	S	S
	徐D10-152 Xu D10-152	兼用型Dual-purpose type	0	10	16	16	S	S
	徐D1-243 Xu D1-243	兼用型Dual-purpose type	6	8	12	16	S	S
	徐紫10 Xuzi 10	高花青素High anthocyanin	0	2	8	18	R	S
	J3-24	兼用型Hual-purpose type	6	8	12	18	S	S
	J10-68	兼用型Hual-purpose type	0	0	16	18	S	S
	徐紫8 Xuzi 8	高花青素High anthocyanin	0	0	12	20	S	S
	徐37 Xu 37	淀粉型Starch type	0	10	18	20	S	S
	J9-25	兼用型Dual-purpose type	0	8	14	20	S	S
	D10-81	兼用型Dual-purpose type	0	12	18	22	S	HS
	徐B21-38 Xu B21-38	兼用型Dual-purpose type	8	12	20	22	S	HS
	K4-1	兼用型Dual-purpose type	0	0	18	24	S	HS
	徐A6-30 Xu A6-30	兼用型Dual-purpose type	0	10	22	24	HS	HS
	E21-46	兼用型Dual-purpose type	6	12	26	28	HS	HS
	徐E21-74 Xu E21-74	兼用型Dual-purpose type	8	14	22	28	HS	HS
	徐28 Xu 28	淀粉型Starch type	4	12	26	28	HS	HS
	J12-33	兼用型Dual-purpose type	0	18	26	28	HS	HS
	徐F6-36 Xu F6-36	兼用型Dual-purpose type	8	18	30	34	HS	HS
	F10-23	兼用型Dual-purpose type	10	24	36	38	HS	HS
	J10-49	兼用型Dual-purpose type	10	28	38	42	HS	HS

Evaluation of resistance to foot rot and analysis of disease resistance related indexes of 60 sweet potato germplasm resources

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