Construction of fingerprints for 33 varieties in Salicaceae

doi:10.12302/j.issn.1000-2006.202008048

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2021, Vol. 45 ›› Issue (2): 35-42.doi: 10.12302/j.issn.1000-2006.202008048

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Construction of fingerprints for 33 varieties in Salicaceae

HE Xudong¹^,²(), ZHENG Jiwei¹^,², SUN Chong²^,³, HE Kaiyue³, WANG Baosong¹^,²^,^*()

1. Jiangsu Academy of Forestry, Nanjing 211153, China
2. Willow Nursery of the Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 211153, China
3. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China

Received:2020-08-28 Accepted:2020-09-25 Online:2021-03-30 Published:2021-04-09
Contact: WANG Baosong E-mail:hxd_519@163.com;965238292@qq.com

Abstract

Abstract:

【Objective】Populus and Salix are members of Salicaceae family. They are dioecious catkin-bearing woody plants that propagate easily, grow fast, and serve as an important source of wood (for furniture), plywood, fiberboard, and pulp and paper industries. In recent years, numerous Populus and Salix varieties have been selected and widely used for afforestation. However, the morphological characteristics among the varieties of Populus and Salix are quite similar, making it difficult to popularize and protect them. To precisely identify different varieties of Salicaceae, a fingerprint for improved varieties of Populus and Salix was established in this study. 【Methods】A total of 38 pairs of expressed sequence tag-derived simple sequence repeat (EST-SSR) markers with high polymorphism information content (PIC) derived from Salix in a previous study were selected randomly to evaluate the transferability of 33 varieties of Salicaceae, of which 12 were genotyped using the fluorescence dUTP method. The fingerprint of different varieties was constructed by the combination of the core primers. To elucidate the genetic relationship between the different varieties, the unweighted pair group method arithmetic average (UPGMA) was used for clustering analysis. 【Result】Among the 38 EST-SSR markers, transferability was 68.4% and 57.89% across all the Populus and Salix varieties, respectively. After genotyping, a total of 97 alleles were detected by 12 pairs of EST-SSR markers, and the number of alleles per locus ranged from 5 to 13, with an average of 8.1 alleles. The PIC of the 12 loci varied from 0.637 2 to 0.834 8, with an average of 0.781 7. Among the three optimal pairs of core primers, the combination of SALeSSR0340 and SALeSSR0346 completely distinguish 12 Populus varieties, and the combination of SALeSSR0259, SALeSSR0340, and SALeSSR0346 completely identified all the 33 varieties used in our study. Cluster analysis demonstrated that the similarity coefficient for the 33 improved varieties ranged from 0.68 to 0.96, and all the improved varieties could be separated into two clades, namely, the genera Populus and Salix, which consisted of the traditional taxonomy of Salicaceae. The clustering result of the genetic relationship of each variety also corresponded with the genetic background. 【Conclusion】In this study, the fingerprints of 33 improved varieties of Salicaceae were constructed and their genetic relationships were evaluated. The divergences between varieties could be effectively screened by the EST-SSR markers, and the genotyping system established in this study was also accurate and efficient. These results can provide scientific evidence for the identification, protection, and popularization of improved varieties of Populus and Salix.

Key words: Populus spp., Salix spp., SSR marker, fingerprint, genetic relationship, genotyping

CLC Number:

HE Xudong, ZHENG Jiwei, SUN Chong, HE Kaiyue, WANG Baosong. Construction of fingerprints for 33 varieties in Salicaceae[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2021, 45(2): 35-42.

Figures/Tables 6

Table 1

Experimental materials"

编号 code	品种 variety	遗传背景 genetic background
1	‘苏柳172’ Salix × jiangsuensis ‘J172’	(垂柳×白柳)×旱柳 (S. babylonica × S. alba)× S. matsudana
2	‘苏柳795’ S. × jiangsuensis ‘J795’	旱柳×白柳 S. matsudana × S. alba
3	‘苏柳799’ S. × jiangsuensis ‘J799’	旱柳×白柳 S. matsudana × S. alba
4	‘苏柳932’ S. × jiangsuensis ‘J932’	垂柳×白柳 S. babylonica × S. alba
5	‘苏柳1010’ S. × jiangsuensis ‘J1010’	垂柳×白柳 S. babylonica × S. alba
6	‘苏柳1011’ S. × jiangsuensis ‘J1011’	垂柳×白柳 S. babylonica × S. alba
7	‘苏柳52-2’ S. × jiangsuensis ‘J52-2’	簸箕柳×银柳 S. suchowensis × S. argyracea
8	‘苏柳8-26’ S. × jiangsuensis ‘J8-26’	簸箕柳×杞柳 S. suchowensis ×S. integra
9	‘苏柳9-6’ S. × jiangsuensis ‘J9-6’	杞柳×簸箕柳 S. integra × S. suchowensis
10	‘苏柳887’ S. × jiangsuensis ‘J887’	吐兰柳×银柳 S. turanica × S. argyracea
11	‘苏柳1050’ S. × jiangsuensis ‘J1050’	簸箕柳×银柳 S.suchowensis × S. argyracea
12	‘花叶柳’ S. integra ‘Tu Zhongyu’	杞柳 S. integra
13	‘竹柳’ ‘Zhuliu’	未知 Unknown
14	‘SV1’	杂交子代 Salix hybrid
15	‘SX61’	龙江柳 S. sachalinensis
16	‘S25’	钻石柳 S. eriocephala
17	‘SX64’	宫部氏柳 S. miyabeana
18	‘SX67’	宫部氏柳 S. miyabeana
19	‘Fish Creek’	欧洲红皮柳 S. purpurea
20	‘Onondaga’	欧洲红皮柳 S. purpurea
21	‘Otisco’	蒿柳 × 宫部氏柳 S. viminalis × S. miyabeana
22	‘南林95’杨 Populus × euramericana ‘Nanlin 95’	‘I-69’杨× ‘I-45’ P. deltoides cl. ‘Lux’ ×(P. × euramericana ‘I-45’)
23	‘南林895’杨 P. ×euramericana ‘Nanlin 895’	‘I-69’× ‘I-45’ P. deltoides cl. ‘Lux’ ×(P. × euramericana ‘I-45’)
24	‘I-69’杨 P. deltoides ‘I-69’	美洲黑杨 P. deltoides
25	‘I-72’杨 P. × euramericana ‘I-72’	欧美杨 P. × euramericana
26	‘35’杨 P. deltoides ‘Dvina’	美洲黑杨 P. deltoides
27	‘苏杨7号’ P. deltoides ‘Suyang-7’	‘I-69’杨实生苗 seedling of ‘I-69’
28	‘I-107’杨 P. × euramericana ‘Neva’	欧美杨 P. × euramericana
29	‘I-108’杨 P. × euramericana ‘I-108’	欧美杨 P. × euramericana
30	‘银中’杨 P. alba × P. berolinensis ‘Yinzhong’	银白杨×中东杨 P. alba × P. berolinensis
31	‘湘林90’杨 P. deltoides ‘XL-90’	50号杨×W07杨 P.deltoides cl. ‘55/65’)×P. deltoides ‘W07’
32	‘丹红’杨 P. deltoides ‘Danhong’	50号杨×36号杨 P. deltoides cl. ‘55 /65’ × P. deltoides ‘2KEN8’
33	‘巨霸’杨 P. deltoides ‘Juba’	50号杨×36号杨 P. deltoides cl. ‘55 /65’ × P. deltoides ‘2KEN8’

Table 1

Table 2

Table 3

Fig.1

Table 4

Fig.2

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编号 code	位点 locus	登录号 accession number	引物序列 primer sequences	基序 motif	期望片段/ bp expected fragment
1	SALeSSR0069	Pr032826640	F:TGACCCACAAAGTGAAACAGA R:CTCAGCCAACTCCGAAGAA	(AGG)₆	151
2	SALeSSR0074	Pr032826645	F:TTTCCGTCCAACTCATCTTCT R:AGCAGTCACGAGGCGAACT	(TTTC)₄	458
3	SALeSSR0108	Pr032826679	F:AAGCTGGACCGCATGAAC R:ACGGGCTATGATGGAGGA	(TGG)₉	378
4	SALeSSR0169	Pr032826740	F:CTTCGCATCTCCGTTTCAC R:CGTCGCTTTGGTTCTGGTT	(CCT)₆	300
5	SALeSSR0259	Pr032826830	F:CGCTTTGGGATGACTGATT R:GTTGCTGGAGTGTTTCTTGG	(CAG)₆	217
6	SALeSSR0264	Pr032826835	F:ACAGAAACGCAAGCCTCAA R:AAAGAGCAACTGCCGAGAA	(ACC)₉	251
7	SALeSSR0279	Pr032826850	F:AACTTCATAGCCCATACACCTT R:CCATCAACAACAACCCAAAC	(CTC)₅	326
8	SALeSSR0296	Pr032826867	F:GTGATACTGGCACCTCTTTCC R:TGGGTGGAACTGTTTCTATTGC	(CAG)₅	275
9	SALeSSR0340	Pr032826911	F:TTCATGCCTTTGGCTGTG R:TGTCCTCTTTGCCCGTCT	(ATG)₆	315
10	SALeSSR0346	Pr032826917	F:CACCCGCAAGTTTCCCTA R:CTGCCCTAAAGCCGTTGT	(AGC)₇	190
11	SALeSSR0696	Pr032827267	F:CTTGCTCGTCCCGTAGATT R:ACCAGGAGTGGCAGAAACC	(GCT)₅	186
12	SALeSSR0939	Pr032827510	F:TCACTTCCACCCGCATCA R:AGACCCGAGGTTTCAGACAG	(TCT)₇	381

位点 locus	等位基因数 number of allele	等位基因长度/bp length of allele	多态信息含量 PIC
SALeSSR0069	11	132~165	0.826 2
SALeSSR0074	7	452~488	0.766 4
SALeSSR0108	9	338~377	0.834 8
SALeSSR0169	9	292~316	0.829 8
SALeSSR0259	8	193~229	0.819 9
SALeSSR0264	6	233~260	0.751 0
SALeSSR0279	5	327~339	0.762 8
SALeSSR0296	6	263~284	0.637 2
SALeSSR0340	10	290~347	0.827 2
SALeSSR0346	13	352~394	0.808 5
SALeSSR0696	6	174~189	0.755 0
SALeSSR0939	7	351~384	0.761 1
合计 total	97
平均 average	8.1		0.781 7

品种 varieties	核心引物 core primers
品种 varieties	SALeSSR0259	SALeSSR0340	SALeSSR0346
‘苏柳172’	211/217	314/317	352/361/373
‘苏柳795’	211/214/217	317	361/382
‘苏柳799’	211/217	317	361/382
‘苏柳932’	193/211	314	358/373
‘苏柳1010’	211/217/220	314	361/373/388
‘苏柳1011’	211/217/220	314	361/376/394
‘苏柳52-2’	217	290/311	361/382
‘苏柳8-26’	211/217	290/311	361/382
‘苏柳9-6’	211/214	290	361/382
‘苏柳887’	214/217	290/311	358/382
‘苏柳1050’	217/229	347	367/394
‘花叶柳’	214/217	293/314	358/385
‘竹柳’	205/217	314/317	352/361/373
‘SV1’	205/211	290	379/388
‘SX61’	208/220	290	361/382
‘S25’	211/214	290	382/391
‘SX64’	217/220	290/311	388
‘SX67’	208/220	290/311	364/388
‘Fish Creek’	208/220	311	361/376
‘Onondaga’	214/217	290/311	361/382
‘Otisco’	214/217	290/311	388
‘南林95’杨	193/208	296/311	379
‘南林895’杨	193/208	296/314	361/379
‘I-69’杨	208	314/317	361/382
‘I-72’杨	208	296	361/382
‘35’杨	208	296/305	361/382
‘苏杨7号’	193/208	314	361/382
‘I-107’杨	208	296/311	361/382
‘I-108’杨	208	296/314	361/382
‘银中’杨	208	329	376/385
‘湘林90’杨	208	314/317	382
‘丹红’杨	208	299/317	361/382
‘巨霸’杨	208	299/317	382

Construction of fingerprints for 33 varieties in Salicaceae

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[10]	LIAO Yangwenke, CUI Rongrong, XIE Yinfeng. The role of β-cyanoalanin synthase in polar leaves under salt stress [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2019, 43(6): 137-142.
[11]	SUN Lina, ZHOU Qun, HUANG Meiping, ZHOU Changpin, XU Shisong, YANG Shuting, DU Ling, GAN Siming, TANG Qing. Using the SSR fluorescent labling to establish SSR fingerprint for 131 cultivars in Bougainvillea (Nyctaginaceae) [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2019, 43(6): 60-66.
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[14]	WANG Li, LI Changrong, LI Fagen, ZHOU Changpin, WENG Qijie, LÜ Jiabin, CHEN Jianbo, CHEN Jiancheng, GAN Siming. SSR loci associated with population adaptation in Eucalyptus cloeziana [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2019, 43(5): 59-66.
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