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中国生物工程杂志

China Biotechnology
China Biotechnology  2021, Vol. 41 Issue (12): 88-102    DOI: 10.13523/j.cb.2111003
    
Research Advances on Genetic Structure and Molecular Mechanism Underlying the Formation of Tassel Traits in Maize
WANG Yan-bo1,2,WEI Jia1,2,LONG Yan1,2,3,DONG Zhen-ying1,2,**(),WAN Xiang-yuan1,2,3,**()
1 Research Center of Biology and Agriculture, Shunde Graduate School, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2 Zhongzhi International Institute of Agricultural Biosciences, Beijing 100192, China
3 Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co., Ltd., Beijing 100192, China
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Abstract  

Maize is a monoecious plant with top terminal tassels and lateral ears. The tassels need to produce sufficient pollens to fertilize ears; however, due to the shading effect on the lower leaves and their own nutritional requirements, the growth and development of tassels have a negative effect on yield through affecting leaf photosynthesis and energy distribution of the whole plant. Optimizing the tassel architecture is thus urgent for maize yield improvement. Maize tassel traits include the number of tassel branches, the length of tassel branches, the length of the principal axis of the tassel, the total length of tassel branches, and the angle of tassel branching, which are all complex quantitative traits controlled by different genetic basis. Since the 1990s, researchers have begun to analyze the genetic structure of maize tassel traits by quantitative trait locus(QTL) mapping. With the release of the reference genome of the maize inbred line B73, and the improvement of high-throughput genotyping technologies such as DNA microarrays and genome resequencing, genome-wide association study(GWAS) has been widely applied in recent years, and a large number of loci associated with the maize tassel traits have been identified. Here, the genetic loci of maize tassel traits identified from different research periods were retrieved, and a consistent physical map was built. Furthermore, the genetic mapping hotspots were isolated which will be useful for the further understanding of the genetic structure of maize tassel traits and the guidance of the cloning of tassel-trait-related genes. At the same time, the cloned genes controlling tassel traits and the corresponding functional mechanism were summarized which will be helpful for further deciphering the genetic network and regulatory pathways of tassel development in maize.



Key wordsTassel      Genetic structure      Quantitative trait loci      QTL mapping      Genome-wide association study(GWAS)     
Received: 31 October 2021      Published: 13 January 2022
ZTFLH:  Q819  
Corresponding Authors: Zhen-ying DONG,Xiang-yuan WAN     E-mail: zydong@ustb.edu.cn;wanxiangyuan@ustb.edu.cn
Cite this article:

WANG Yan-bo,WEI Jia,LONG Yan,DONG Zhen-ying,WAN Xiang-yuan. Research Advances on Genetic Structure and Molecular Mechanism Underlying the Formation of Tassel Traits in Maize. China Biotechnology, 2021, 41(12): 88-102.

URL:

https://manu60.magtech.com.cn/biotech/10.13523/j.cb.2111003     OR     https://manu60.magtech.com.cn/biotech/Y2021/V41/I12/88

Fig.1 Developmental process of maize inflorescence
染色体 TBN TL TLL TBL TBA 总计
Chr1 39/126 29/147 4/0 5/0 3/0 80/273
Chr2 46/170 14/56 5/0 1/0 3/0 69/226
Chr3 50/171 26/51 2/0 2/0 1/0 81/222
Chr4 31/135 19/73 1/0 1/0 1/0 53/206
Chr5 25/128 15/77 1/0 2/0 1/0 44/205
Chr6 20/63 18/89 3/0 0/0 2/0 43/152
Chr7 38/127 14/55 2/0 3/0 3/0 60/182
Chr8 23/67 13/50 1/0 1/0 1/0 39/117
Chr9 13/72 13/49 0/0 1/0 1/0 28/121
Chr10 22/50 5/29 1/0 1/0 2/0 31/79
总计 307/1 109 166/674 20/0 17/0 18/0 528/1 783
Table 1 Summary of QTLs and QTNs of tassel traits in maize
Fig.2 Distribution of tassel traits related QTLs and QTNs in maize genome
Fig.3 Distribution of tassel traits related QTL and QTN hotspots in maize genome
生物学功能 基因名称 基因号 编码蛋白 染色体位置/bp 参考文献
干细胞增殖
和分化
CT2 Zm00001d027886 异三聚体GTP结合蛋白 Chr1: 16721214~16732176 [46]
ZmWUS1 Zm00001d001948 同源结构域转录因子 Chr2: 3415296~3419504 [47]
FEA3 Zm00001d040130 亮氨酸重复类受体蛋白 Chr3: 28709631~28715222 [48]
FEA2 Zm00001d051012 亮氨酸重复类受体蛋白 Chr4: 136764371~136769212 [49-50]
TD1 Zm00001d014793 亮氨酸重复类受体蛋白激酶 Chr5: 63455339~63461620 [51]
FEA4 Zm00001d037317 bZIP转录因子 Chr6: 120722612~120728273 [52]
ZmWUS2 Zm00001d026537 同源结构域转录因子 Chr10: 147854036~147858373 [47]
分生组织起始 BIF2 Zm00001d031068 丝苏氨酸激酶 Chr1: 175806351~175810932 [52-54]
BA2 Zm00001d003897 bHLH 转录因子 Chr2: 65741213~65756966 [55]
RA2 Zm00001d039694 LOB转录因子 Chr3: 12156780~12160565 [56]
BA1 Zm00001d042989 bHLH 转录因子 Chr3: 186013129~186016764 [57]
SPI1 Zm00001d044069 黄素单氧酶 Chr3: 218285795~218290961 [58]
BIF4 Zm00001d037691 Aux/IAA蛋白 Chr6: 134087331~134094170 [59]
RA1 Zm00001d020430 Cys2-His2 锌脂转录因子 Chr7: 113570910~113574437 [60]
RA3 Zm00001d022193 海藻糖-6磷酸磷酸酶 Chr7: 172483459~172490694 [61]
VT2 Zm00001d008700 色氨酸转氨酶 Chr8: 17393223~17400365 [62]
BIF1 Zm00001d008749 Aux/IAA蛋白 Chr8: 18950258~18955333 [63]
侧生分生
组织起始
UB2 Zm00001d031451 SBP-box转录因子 Chr1: 190381366~190388089 [64]
CG1 GRMZM2G022489 miR156 Chr3: 6926778~6929901 [65]
LG2 Zm00001d042777 bZIP蛋白 Chr3: 179386227~179397947 [66]
UB3 Zm00001d052890 SBP-box转录因子 Chr4: 203609847~203617018 [67]
BD1 Zm00001d022488 bHLH 转录因子 Chr7: 178604458~178608405 [68]
分生组织确定性 DCL1 Zm00001d027412 miRNA生物合成酶 Chr1: 4722956~4738332 [69]
TS4 GRMZM5G803935 SBP-box转录因子 Chr3: 144916511~144920220 [70]
性别决定 TS2 Zm00001d028806 氧化还原酶 Chr1: 46953827~46958171 [71]
TS1 Zm00001d003533 脂氧合酶蛋白 Chr2: 47103687~47110872 [72]
SILKY3 Zm00001d004130 核酸蛋白 Chr2: 85360621~85369941 [73]
NA1 Zm00001d042843 类固醇还原酶 Chr3: 181819965~181824489 [74]
营养阶段向生殖
阶段转变
ZFL2 Zm00001d002449 FLORICAULA/LEAFY同源转录因子 Chr2: 12912591~12918568 [75]
ZFL1 Zm00001d026231 FLORICAULA/LEAFY同源转录因子 Chr10: 141560362~141566267 [75]
花期转变 ZMM4 Zm00001d034045 MADS转录因子 Chr1: 282134674~282167480 [76]
分生组织活性 REL2 Zm00001d024523 转录共抑制因子 Chr10: 75992328~76004412 [77]
分生组织起始和小
穗分生组织命运
IDS1 Zm00001d034629 AP2转录因子 Chr1: 298421359~298428550 [78]
SID1 Zm00001d019230 AP2转录因子 Chr7: 23052961~23067089 [78]
苞片生长发育 TSH1 Zm00001d039113 GATA 锌脂蛋白 Chr6: 170246513~170250985 [79]
TSH4 Zm00001d020941 SBP-box转录因子 Chr7: 137272100~137278639 [80]
分生组织活性 RTE Zm00001d030656 硼转运蛋白 Chr1: 151219729~151227321 [81]
生物学功能 基因名称 基因号 编码蛋白 染色体位置/bp 参考文献
硼转运蛋白 TLS1 Zm00001d032461 硼通道蛋白 Chr1: 227447816~227454579 [82]
雄穗分枝角度 BAD1 Zm00001d005737 TCP转录因子 Chr2: 185420859~185424689 [83]
雄穗分枝数量 QDtbn1 Zm00001d053358 F-box蛋白 Chr4: 227482692~227483909 [84]
细胞分裂素
合成相关
KN1 Zm00001d033859 KNOX转录因子 Chr1: 276071835~276082742 [85]
Table 2 Summary of the genes related to male inflorescence development in maize
染色体 QTLs共定位区间/Mb QTNs共定位区间/Mb 重叠区间/Mb 花序发育相关基因
1 15.446~25.3061
33.147~35.164
43.914~47.6702
69.750~78.359
159.020~159.029
196.666~197.169
206.926~208.963
285.747~287.742
290.528~292.719
295.779~295.781
297.925~297.927
10.058~10.754
193.872~194.362
249.337~250.115
CT21
TS22
2 3.380~4.8633,4
13.851~19.120
26.728~28.948
30.533~30.966
32.090~32.227
189.209~189.291
224.131~224.195
2.707~3.5633
4.073~5.9494
11.325~14.995
23.168~25.037
48.245~49.011
185.577~186.715
212.155~216.148
241.047~242.030
3.380~4.0733
13.851~14.995
ZmWUS13LG14
3 147.771~147.966
170.148~192.5445,6,7
19.166~20.083
53.391~53.964
152.498~153.470
174.370~175.283
179.523~184.6676
186.752~187.900
188.380~189.319
214.197~214.926
215.696~217.604
218.524~220.242
174.370~175.283
179.523~184.6676
186.752~187.900
188.380~189.319
LG25
NA16
BA17
4 36.909~38.554
144.880~160.501
175.576~175.640
181.244~181.286
216.731~224.943
155.912~156.842
170.332~171.161
172.606~173.980
175.739~176.981
178.465~185.036
185.702~186.583
189.294~190.050
155.912~156.842
181.244~181.286
5 9.944~10.018
155.423~159.990
188.176~200.181
1.128~3.404
10.351~11.126
201.218~201.669
204.942~207.519
209.887~210.713
211.628~212.586
219.599~220.017
6 133.981~134.017
145.192~146.467
152.460~154.392
155.916~157.948
166.532~168.826
染色体 QTLs共定位区间/Mb QTNs共定位区间/Mb 重叠区间/Mb 花序发育相关基因
7 28.786~39.161
39.469~39.629
75.813~76.357
83.489~85.541
111.723~112.716
113.233~113.290
113.760~113.769
119.717~120.786
124.148~127.859
172.473~173.54810
176.727~179.050
22.844~23.7798
111.381~112.591
136.145...138.3789
152.803~153.336
171.930~174.33710
178.044~178.752
111.723~112.591
172.473~173.548
178.044~178.752
SID18
TSH49
RA310
8 15.980~15.989
136.686~137.739
173.517~173.711
175.355~175.398
175.627~176.060
17.301~21.47711,12
169.183~170.471
177.137~179.089
VT211
BIF112
9 51.718~68.851
93.176~102.973
136.739~137.501
154.942~155.936
10 87.396~88.064
93.611~115.710
14.451~14.796
141.562~142.40913
ZFL113
Table S1 Summary of the QTL and QTN hotspots for maize TBN trait
染色体 QTLs共定位区间/Mb QTNs共定位区间/Mb 重叠区间/Mb 花序发育相关基因
1 2.820~3.744
15.065~15.322
16.286~17.2391
22.995~23.959
51.839~52.516
105.973~106.673
190.267~191.2392,3
255.043~255.5684
282.157~288.638
303.295~304.801
CT21
UB22
RMR63
ZMM44
2 4.655~5.949
3 9.515~9.8295 D15
4 3.198~3.844
222.756~223.708
5 5.561~7.216 /
6 158.005~158.142 33.096~33.861
40.394~41.661
96.983~97.943
154.757~154.921
158.920~159.509
7 92.948~111.723409 141.989 307~142.675
157.587 210~159.490
8 124.501~126.340 178.010 329~180.921
Table S2 Summary of the QTL and QTN hotspots for maize TL trait
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