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| 1 | Characterization of Carotenoid Accumulation and Carotenogenic Gene Expression During Fruit Development in Yellow and White Loquat Fruit显示文摘Accumulation of carotenoids in peel and pulp of the yellow-fleshe loquat ‘Zaozhong 6'(ZZ6) and the white-fleshe loquat ‘Baiyu'(BY) were tracked during different fruit development stages, and the expression of 15 carotenogenic genes were analyzed. During loquat fruit ripening the fresh weight content of β-carotene in peel and pulp of ZZ6 increased gradually and peaked at the fully ripe stage, reaching 68.53 μg·g^(-1)FW in the peel and 11.92 μg·g^(-1)FW in the pulp. In BY, the content of β-carotene in the peel increased and peaked at the fully ripe stage, reaching38.89 μg·g^(-1)FW, while it decreased in the pulp from the original 0.47 μg·g~(^(-1))FW and reduced to 0.29 μg·g~(^(-1))FW. The content of β-cryptoxanthin in the peel and pulp of ZZ6 and BY both increased steadily, and peaked at the fully ripe stage; however, the content of lutein decreased in the peel of ZZ6 and increased in the pulp, but in BY, it dropped and then rose in the peel. There was no significan change of β-cryptoxanthin in the pulp of BY. After the breaker stage, the m RNA levels of phytoene synthase(PSY) and chromoplast-specifi lycopene β-cyclase(CYCB) were higher in the peel, while CYCB and β-carotene hydroxylase(BCH) m RNAs were higher in the fles of ZZ6, compared with BY. The results showed that the expression level of PSY, CYCB, and BCH appeared to cooperatively regulate the accumulation of carotenoids. | ZHANG Ling ZHANG Zhike ZHENG Tingting WEI Weilin ZHU Yunmei GAO Yongshun YANG Xianghui LIN Shunquan | 2016 | Horticultural Plant Journal2016，2，1： | 6 |
| 2 | EjBZR1 represses fruit enlargement by binding to the EjCYP90 promoter in loquat显示文摘Loquat(Eriobotrya japonica)is a subtropical tree that bears fruit that ripens during late spring.Fruit size is one of the dominant factors inhibiting the large-scale production of this fruit crop.To date,little is known about fruit size regulation.In this study,we first discovered that cell size is more important to fruit size than cell number in loquat and that the expression of the EjBZR1 gene is negatively correlated with cell and fruit size.Virus-induced gene silencing(VIGS)of EjBZR1 led to larger cells and fruits in loquat,while its overexpression reduced cell and plant size in Arabidopsis.Moreover,both the suppression and overexpression of EjBZR1 inhibited the expression of brassinosteroid(BR)biosynthesis genes,especially that of EjCYP90A.Further experiments indicated that EjCYP90A,a cytochrome P450 gene,is a fruit growth activator,while EjBZR1 binds to the BRRE(CGTGTG)motif of the EjCYP90A promoter to repress its expression and fruit cell enlargement.Overall,our results demonstrate a possible pathway by which EjBZR1 directly targets EjCYP90A and thereby affects BR biosynthesis,which influences cell expansion and,consequently,fruit size.These findings help to elucidate the molecular functions of BZR1 in fruit growth and thus highlight a useful genetic improvement that can lead to increased crop yields by repressing gene expression. | Wenbing Su Zikun Shao Man Wang Xiaoqing Gan Xianghui Yang Shunquan Lin | 2021 | Horticulture Research2021，8，1： | 2 |
| 3 | In situ and ex situ conservation of Eriobotrya in China显示文摘 | Hu Youli Lin Shunquan Yang Xianghui | 2007 | Acta Hort2007，760，： | 1 |
| 4 | Removal of the main inflorescence to induce reflowering of loquat显示文摘Loquat(Eriobotrya japonica Lindl.)is an evergreen fruit tree species of the Rosaceae,and its unique flowering time greatly hinders its production.To explore the artificial regulation of loquat flowering time,we removed the main inflorescence(by cutting it)to induce reflowering.For different loquat tree cultivars with different stages,the inflorescence was removed by cutting the main floral axis at two alternative positions:the upper or the lower position beneath the inflorescence,and it was found that the proportion of reflowering resulting from removing the upper position of the main floral axis of yellow-flesh loquat cultivars during the full-bloom stage was the highest.In addition,compared with those of the normal-growing panicles,the number of flower buds and branch axes of the reflowering panicles decreased significantly after cutting.Importantly,these newly produced inflorescences flowered 2–4 months later than normal-growing inflorescences did,effectively prolonging both the flowering and fruiting time.In addition,qRT-PCR results showed that EjFT1,EjFT2,EjAP1–1 and EjAP1–2 were highly expressed in the floral axis.These findings highlighted a new method for extending the production cycle of loquat and provided a reference for the flowering regulation of loquat and other economically important fruit tree species. | Jiangrong Peng Wenkun Li Yuan Yuan Zhiqiang Han Yunpeng Cao Muhammad Qasim Shahid Zhike Zhang Yongshun Gao Shunquan Lin Yuanyuan Jiang | 2022 | Horticultural Plant Journal2022，8，1： | 1 |
| 5 | Inter-specific and Inter-generic Hybridization Compatibility of Eriobotrya Species (Loquat) and Related Genera显示文摘We studied the cross-compatibility among 91 inter-specific combinations and 21 inter-generic combinations in 7 Eriobotrya plants and 2 related genera(Raphiolepis indica Lindl. and Photinia serrulata Lindl.) using emasculation, bagging, and artificial pollination. Our results showed that28 of the 91 inter-specific combinations set no fruit, which means nearly 30% of the combinations were incompatible. In the remaining 63 combinations, most showed partial cross-compatibility, and a few showed complete cross compatibility. Eriobotrya plants were incompatible with plants from their related genera(R. indica Lindl. and P. serrulata Lindl.). Backcrossing produced 5 compatible combinations, which could set fruits and produce F1 progeny but only after embryo rescue. Fruit setting ratios varied among various species used as male or female parents.E. prinoides Rehd. & Wils., common loquat(E. japonica) and Eriobotrya × daduheensis, used as female parents resulted in an average fruitsetting ratio of 36.2%–58.2%. E. deflexa Nakai and its two forms, and E. elliptica Lindl. as female parents resulted in 2.9%–16.3% average fruitsetting ratio; however, the fruit set ratio was higher(22.4%–43.1%) if they were used as male parents. Failure of E. deflexa f. koshunensis Nakai × E.prinoides Rehd. & Wils. hybrids to set fruit could be attributed to sporophytic incompatibility. | LI Guifen ZHANG Zhike YANG Xianghui QIAO Yanchun HE Xiaolong GAO Yongshun JIANG Yuanyuan LIN Shunquan | 2016 | Horticultural Plant Journal2016，2，6： | 1 |
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