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| 1 | PbGA2ox8 induces vascular-related anthocyanin accumulation and contributes to red stripe formation on pear fruit显示文摘Fruit with stripes,which are generally longitudinal,can occur naturally,but the bioprocesses underlying this phenomenon are unclear.Previously,we observed an atypical anthocyanin distribution that caused red-striped fruit on the spontaneous pear bud sport“Red Zaosu”(Pyrus bretschneideri Rehd.).In this study,comparative transcriptome analysis of the sport and wild-type“Zaosu”revealed that this atypical anthocyanin accumulation was tightly correlated with abnormal overexpression of the gene-encoding gibberellin(GA)2-beta-dioxygenase 8,PbGA2ox8.Consistently,decreased methylation was also observed in the promoter region of PbGA2ox8 from“Red Zaosu”compared with“Zaosu”.Moreover,the GA levels in“Red Zaosu”seedlings were lower than those in“Zaosu”seedlings,and the application of exogenous GA4 reduced abnormal anthocyanin accumulation in“Red Zaosu”.Transient overexpression of PbGA2ox8 reduced the GA4 level and caused anthocyanin accumulation in pear fruit skin.Moreover,the presence of red stripes indicated anthocyanin accumulation in the hypanthial epidermal layer near vascular branches(VBs)in“Red Zaosu”.Transient overexpression of PbGA2ox8 resulting from vacuum infiltration induced anthocyanin accumulation preferentially in calcium-enriched areas near the vascular bundles in pear leaves.We propose a fruit-striping mechanism,in which the abnormal overexpression of PbGA2ox8 in“Red Zaosu”induces the formation of a longitudinal array of anthocyanin stripes near vascular bundles in fruit. | Rui Zhai Zhigang Wang Chengquan Yang Kui Lin-Wang Richard Espley Jianlong Liu Xieyu Li Zhongying Wu Pengmin Li Qingmei Guan Fengwang Ma Lingfei Xu | 2019 | Horticulture Research2019，6，1： | 5 |
| 2 | Unraveling a genetic roadmap for improved taste in the domesticated apple显示文摘Although taste is an important aspect of fruit quality, an understanding of its genetic control remains elusive in apple and other fruit crops. In this study, we conducted genomic sequence analysis of 497 Malus accessions and revealed erosion of genetic diversity caused by apple breeding and possible independent domestication events of dessert and cider apples. Signatures of selection for fruit acidity and size, but not for fruit sugar content, were detected during the processes of both domestication and improvement. Furthermore, we found that single mutations in major genes affecting fruit taste, including Ma1, MdTDT, and MdSOT2, dramatically decrease malate, citrate, and sorbitol accumulation, respectively, and correspond to important domestication events. Interestingly, Ma1 was identified to have pleiotropic effects on both organic acid content and sugar:acid ratio, suggesting that it plays a vital role in determining fruit taste. Fruit taste is unlikely to have been negatively affected by linkage drag associated with selection for larger fruit that resulted from the pyramiding of multiple genes with minor effects on fruit size. Collectively, our study provides new insights into the genetic basis of fruit quality and its evolutionary roadmap during apple domestication, pinpointing several candidate genes for genetic manipulation of fruit taste in apple. | Liao Liao Weihan Zhang Bo Zhang Ting Fang Xiao-Fei Wang Yarning Cai Collins Ogutu Lei Gao Gang Chen Xiaoqing Nie Jinsheng Xu Quanyan Zhang Yiran Ren Jianqiang Yu Chukun Wang Cecilia H.Deng Baiquan Ma Beibei Zheng Chun-Xiang You Da-Gang Hu Richard Espley Kui Lin-Wang Jia-Long Yao Andrew C.Allan Awais Khan Schuyler S.Korban Zhangjun Fei Ray Ming Yu-Jin Hao Li Li Yuepeng Han | 2021 | Molecular Plant2021，14，9： | 5 |
| 3 | Identification and eharacterisation of FSGT1 and F3GGT1, two glycosyltransferases responsible for anthocyanin biosynthesis in red-fleshed kiwifruit (Actinidia chinensis) 显示文摘 | MONTEFIORI M ESPLEY R V | 2011 | The Plant Journal2011，65，1： | 1 |
| 4 | An ancient duplication of apple MYB transcription fac- tors is responsible for novel red fruit-flesh pheno- types显示文摘 | Chagn D Lin-Wang K Espley R V | 2013 | Plant Physiology2013，161，1： | 1 |
| 5 | High temperature reduces apple fruit colour via modulation of the anthocyanin regulatory complex显示文摘 | Wang L K Micheletti D Palmer J Volz R Lozano L Espley R Hellens R P Chagn6 D Rowan D D Troggio M Iglesias I Allan A C | 2011 | Plant Cell & Environment2011，34，： | 1 |
| 6 | Red colouration in apple fruit is due to the activity of the MYB transcription factor, Md- MYB10显示文摘 | ESPLEY R V HELLENS R P PUTI'ERILL J | 2007 | The Plant Journal2007，49，： | 1 |
| 7 | Transcriptional regulation of flavonoid biosynthesis in nectarine (Prunus persica) by a set of R2R3 MYB transcription factors显示文摘 | Ravaglia D Espley R V Henry-Kirk R A | 2013 | BMC Plant Biology2013，13，1： | 1 |
| 8 | Differential expression within the LOX gene family in ripening kiwifruit显示文摘 | ZHANG B CHEN K S BOWEN J ALLAN A ESPLEY R KARUNAIRETNAM S FERGUSON I | 2006 | Journal of Experimental Botany2006，57，14： | 1 |
| 9 | Red colouration in apple fruit is due to the activity of the MYB transcription factor, MdMYB10显示文摘 | ESPLEY R V HELLENS R P PUTYERILL J STEVENSON D E KUTTY-AMMA S ALLAN A C | 2007 | The Plant Journal2007，49，3： | 1 |
| 10 | Red colouration in apple fruit is due to the activity of the MYB transcription factor, MdMYB10显示文摘 | Espley R V Hellens R P Putterill J | 2007 | The Plant Journal2007，49，： | 1 |
| 11 | Differential expression within the LOX gene family in ripening kiwifruit显示文摘 | ZHANG B CHEN K S BOWEN J ALLAN A ESPLEY R KARUNA1RETNAM S FERGUSON I | 2006 | Journal of Experimental Botany2006，57，： | 1 |
| 12 | Multiple repeats of a promoter segment causes transcription factor autoregulation in red apples显示文摘 | ESPLEY R V BRENDOLISE C CHAGNE D KUTI'Y-AMMA S GREEN S VOLZ R PUTFERILL J SCHOUTEN H J GARDINER S E HELLENS R P ALLAN A C | 2009 | Plant Cell2009，21，1： | 1 |
| 13 | Differential expression within the LOX gene family in ripening kiwifruit显示文摘 | ZHANG B CHEN K S BOWEN J ALLAN A ESPLEY R KARUNAIRETNAM S FERGUSON I | 2006 | Journal of experimental botany2006，57，14： | 1 |
| 14 | Identification and characterisation of F3GT1 and F3GGT1,two glycosyltransferases responsible for anthocyanin biosynthesis in red-fleshed kiwifruit(Actinidia chinensis) 显示文摘 | Montefiori M Espley RV Stevenson D Cooney J Datson PM Saiz A | 2011 | Plant J2011，65，1： | 1 |
| 15 | Multiple repeats of a promoter segment causes transcription factor auto regulation in red apples显示文摘 | Espley R V Brendolise C ChagnéD | 2009 | The Plant Cell2009，21，： | 1 |
| 16 | Red colouration in apple fruit is due to the activity of the MYB transcription factor,MdMYB10显示文摘 | Espley R V Hellens R P Putterill J | 2007 | Plant J2007，49，3： | 1 |
| 17 | Red colouration in apple fruit is due to the activity of the MYB transcription faetor,MdMYB10显示文摘 | ESPLEY R V HELLENS R P PUTTER1LL J | 2007 | The Plant Journal2007，49，3： | 1 |
| 18 | Red colouration in apple fruit is due to the activity of the MYB transcription factor, MdMYBI0显示文摘 | ESPLEY R V HELLENS R P PUTrERILL J | 2007 | Plant Journal2007，49，3： | 1 |
| 19 | Fine-mapping and validation of the genomic region underpinning pear red skin colour显示文摘Red skin colour is an important target trait in various pear breeding programmes.In this study,the genetic control of red skin colour was investigated in an interspecific population derived using the descendants of the red sport European pear cultivar‘Max Red Bartlett’(MRB)and the red-blushed Chinese pear cultivar‘Huobali’.Approximately 550 seedlings from nine families were phenotyped for red skin over-colour coverage(Ocolcov)and the intensity of red over-colour(Ocolint)on a 0–9 scale,and genotyped using genotyping-by-sequencing.Genome-wide association analyses were conducted using 7500 high-quality single nucleotide polymorphisms(SNPs).Genomic regions on linkage groups(LG)4 and 5 were found to be associated,and the best SNP(S578_25116)on LG4 accounted for~15%of phenotypic variation in Ocolcov and Ocolint.The association of S578_25116 with Ocolcov and Ocolint was successfully validated in a sample of~200 European and Asian pear accessions.The association with red skin at locus S578_25116 was not present in Asian pear accessions,suggesting its close proximity to the MRB’s Cardinal gene.Several putative candidate genes,including MYB transcription factors(PCP027962 and PCP027967),were identified in the quantitative trait locus region on LG4 and await functional validation. | Satish Kumar Chris Kirk Cecilia Hong Deng Claudia Wiedow Mengfan Qin Richard Espley Jun Wu Lester Brewer | 2019 | Horticulture Research2019，6，1： | 1 |
| 20 | Multiple re- peats of a promoter segment causes transcription factor au- toregulation in red apples显示文摘 | ESPLEY R V BRENDOLISE C CHAGN D | 2009 | The Plant Ce112009，21，1： | 1 |
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