1.Institute of Agricultural Environment and Resource/Yunnan Key Laboratory of Green Prevention and Control of Agricultural Transboundary Pests,Yunnan Academy of Agricultural Sciences,Kunming 650205,China
Fusariumwilt, a disease that significantly affects the global banana industry, has been a subject of interest in related research fields. To investigate the role of starch content in root tissues during the host bananas's response to Fusariumwilt disease infection, in this study, six different banana germplasms which were resistant or susceptible were artificially inoculated with Fusarium oxysporum f. sp. cubense tropical race 4(Foc TR4), the starch content in root tissues at various time points after inoculation was measured and its dynamic changes were analyzed. The results indicated that the starch content in the root tissues of all banana germplasms increased after inoculation with Foc TR4. The response of starch content to Foc TR4 infection in the resistant germplasms was more obvious than that in the susceptible germplasms. The resistant germplasms reached their maximum starch content 7 days earlier than the susceptible germplasms, within the measurement time range. The average change rates of the resistant germplasms at different time(7,14,21, and 28 d) were 81.0%, 97.0%, 127.6%, and 94.8%, respectively, higher than those of the susceptible germplasms 42.5%, 32.1%, 46.1%, and 72.9%, indicating a significant positive correlation between the change rate of banana root tissue starch content and resistance to Foc TR4. In conclusion, starch in root tissue played a crucial role in response mechanism of banana to Fusariumwilt infection and the change rate in starch content in root tissues of different banana germplasms determined their resistance to Foc TR4.
随着香蕉产业的不断发展,其在人类生产生活中占据越来越重要的地位,但却一直面临枯萎病的威胁。该病在我国乃至世界其他各大香蕉主产区大面积爆发和流行,严重制约着香蕉产业的可持续发展[4]。香蕉枯萎病由尖孢镰刀菌古巴专化型(Fusarium oxysporum f. sp. cubense)引起,其根据对香蕉的致病性分为1号、2号和4号生理小种,其中,4号生理小种热带型在我国台湾首先被报道,造成的危害最大,危害面积最广,传播途径多样[5]。病原菌最初通过根入侵植株,进入维管束向上扩展至球茎、假茎和叶片;病原菌破坏植物细胞膜,使维管束变色腐烂,球茎、假茎逐渐坏死;染病植株从最老叶片开始由边缘向叶脉逐渐发黄,随着发黄叶片不断增多,最终整棵植株枯萎死亡[6]。目前尚缺乏有效的药剂和优质的抗病品种,只能利用综合防控技术使香蕉枯萎病得到一定的缓解[7],但由于病原菌的不断进化、传播途径多变,使得香蕉枯萎病的防控仍面临着巨大的困难。选育抗病品种是枯萎病防治最有效的途径之一[1],是防控的核心基础。近年来,研究重点逐渐转向香蕉枯萎病抗性机理解析[8-10]、抗病品种选育[7]等方面,然而,香蕉三倍体无性繁殖限制了品种选育的进程,且对其抗病机理的研究尚不完全。
LIH P, LIY F, NIEY F. Research status of occurrence and control of Fusarium wilt of banana[J]. Journal of South China Agricultural University,2019,40(5):128-136.
YANGF, LIUC C, DENGG M,et al. Research progress of banana nutritional quality and functional properties[J]. Guangdong Agricultural Sciences,2022,49(10):146-154.
[5]
PLOETZR C.Management of Fusarium wilt of banana:a review with special reference to tropical race 4[J]. Crop Protection,2015,73:7-15.
[6]
PLOETZR C. Fusarium wilt of banana is caused by several pathogens referred to as Fusarium oxysporum f.sp.cubense [J]. Phytopathology,2006,96(6):653-656.
[7]
DONGH H, FANH Y, LEIZ X,et al. Histological and gene expression analyses in banana reveals the pathogenic differences between races 1 and 4 of banana Fusarium wilt pathogen[J]. Phytopathology,2019,109(6):1029-1042.
ZHANGM Y, ZHOUD B, QID F,et al. Research progress on the integrated control of Fusarium wilt disease in banana[J]. Scientia Sinica(Vitae),2024,54(10):1843-1852.
KUANGM Y. Primary study on resistance and mechanism differences of cultivated bananas with AAB genomic compositions to Fusarium oxysporum f.sp.cubense tropical race 4[D]. Guiyang:Guizhou Normal University,2022.
[14]
张曼. 抗香蕉枯萎病品种的抗性机理及对土壤微生物群落的影响[D]. 海口:海南大学,2016.
[15]
ZHANGM. The mechanism of disease-resistant varieties to banana Fusarium wilt disease and the effects on soil microbial community structure[D]. Haikou:Hainan University,2016.
WUY L, YANGQ S, LIC Y,et al. Research progress in the mechanisms of Banana-Fusarium oxysporum f.sp.cubense interaction and genetic improvement for resistance to Fusarium wilt[J]. Guangdong Agricultural Sciences,2020,47(11):32-41.
WANGH J, WANGE Q, FUZ Z,et al. Changes of endogenous hormones and carbohydrates during rhizome formation and development of herbaceous peony[J]. Journal of Henan Agricultural Sciences,2024,53(3):118-124.
[20]
YANGR, SUNY, ZHUX L,et al. The Tuber-specific StbHLH93 gene regulates proplastid-to-amyloplast development during stolon swelling in potato[J]. New Phytologist,2024,241(4):1676-1689.
[21]
ZHANGZ Y, DONGJ Q, JIC,et al. NAC-type transcription factors regulate accumulation of starch and protein in maize seeds[J]. Proceedings of the National Academy of Sciences of the United States of America,2019,116(23):11223-11228.
XV N, XVY K, ZHANGH L,et al. Effects of UV irradiation and ethyl methyl sulfonate mutagenesis on starch content and yield traits of early maturing potato varieties[J]. Journal of Shanxi Agricultural Sciences,2024,52(5):75-84.
[24]
VERELSTW, SKIRYCZA, INZÉD. Abscisic acid,ethylene and gibberellic acid act at different developmental stages to instruct the adaptation of young leaves to stress[J]. Plant Signaling & Behavior,2010,5(4):473-475.
[25]
DAIM H, YANGX M, CHENQ J,et al. Comprehensive genomic identification of cotton starch synthase genes reveals that GhSS9 regulates drought tolerance[J]. Frontiers in Plant Science,2023,14:1163041.
[26]
FANTONA C, FURZEM E, BRODERSENC R. Pathogen-induced hydraulic decline limits photosynthesis and starch storage in grapevines(Vitis sp.)[J]. Plant,Cell & Environment,2022,45(6):1829-1842.
[27]
KEELEYM, ROWLANDD, VINCENTC. Citrus photosynthesis and morphology acclimate to phloem-affecting huanglongbing disease at the leaf and shoot levels[J]. Physiologia Plantarum,2022,174(2):e13662.
[28]
LALM K, TIWARIR K, KUMARR,et al. Effect of potato apical leaf curl disease on glycemic index and resistant starch of potato(Solanum tuberosum L.) tubers[J]. Food Chemistry,2021,359:129939.
[29]
ZHOUG D, HEP, TIANL B,et al. Disentangling the resistant mechanism of Fusarium wilt TR4 interactions with different cultivars and its elicitor application[J]. Frontiers in Plant Science,2023,14:1145837.
LIUL N, YANGB M, WANGY F,et al. Assessing of the resistance of introduced banana germplasms to Fusarium oxysporumf.sp.cubense tropical race 4[J]. South China Fruits,2021,50(6):63-68.
XUS T, BAIT T, ZHANGL,et al. Evaluation of different banana varieties on Fusarium wilt TR4 resistance by phenotypic symptom and real-time quantitative PCR[J]. Southwest China Journal of Agricultural Sciences,2017,30(9):1997-2002.
[39]
XIEY X, QIY X, ZHANGX,et al. Study on culturing characters and pathogenicity of banana Fusarium wilt in Hainan[J]. Plant Protection,2005,31:71-73.
[40]
XUS T, BAIT T, ZHANGL,et al. Evaluation of banana cultivars for resistance to Fusarium wilt Tropical Race 4[J]. Acta Horticulturae,2020(1272):73-82.
[41]
BRAKEV M, PEGGK G, IRWINJ,et al. The influence of temperature,inoculum level and race of Fusarium oxysporum f.sp.cubense on the disease reaction of banana cv.Cavendish[J]. Australian Journal of Agricultural Research,1995,46(3):673.
[42]
WANGX C, CHANGL L, WANGB C,et al. Comparative proteomics of Thellungiella halophila leaves from plants subjected to salinity reveals the importance of chloroplastic starch and soluble sugars in halophyte salt tolerance[J]. Molecular & Cellular Proteomics,2013,12(8):2174-2195.
[43]
ABDELGAWADH, AVRAMOVAV, BAGGERMANG,et al. Starch biosynthesis contributes to the maintenance of photosynthesis and leaf growth under drought stress in maize[J]. Plant,Cell & Environment,2020,43(9):2254-2271.
[44]
ZEEMANS C, KOSSMANNJ, SMITHA M. Starch:its metabolism,evolution,and biotechnological modification in plants[J]. Annual Review of Plant Biology,2010,61:209-234.
DONGH H. Research of Brazilian resistance differences to Fusarium oxysporum F.sp.cubense race 1 and race 4[D]. Guangzhou:South China Agricultural University,2019.
[47]
CHENH J, CHENJ Y, WANGS J. Molecular regulation of starch accumulation in rice seedling leaves in response to salt stress[J]. Acta Physiologiae Plantarum,2008,30(2):135-142.
[48]
ETXEBERRIAE, GONZALEZP, ACHORD,et al. Anatomical distribution of abnormally high levels of starch in HLB-affected Valencia orange trees[J]. Physiological and Molecular Plant Pathology,2009,74(1):76-83.
[49]
SCHNEIDERH. Anatomy of greening-diseased sweet orange shoots[J]. Phytopathology,1968,58:1155-1160.
[50]
TAKUSHIT, TOYOZATOT, KAWANOS,et al. Scratch method for simple,rapid diagnosis of Citrus huanglongbing using iodine to detect high accumulation of starch in the Citrus leaves[J]. Japanese Journal of Phytopathology,2007,73(1):3-8.
KUANGR B, LIC Y, YANGJ,et al. Cell structure alteration of banana cultivars with different resistance to Fusarium oxysporum f.sp.cubense [J]. Molecular Plant Breeding,2013,11(2):193-198.
[53]
VIDHYASEKARANP. Carbohydrate metabolism of ragi plants infected by Helminthosporium nodulosum [J]. Journal of Phytopathology,1974,79(2):130-141.
WUY, SUH N, HUANGA J,et al. Effect of candidatus liberibacter asiaticus infection on carbohydrate metabolism in Citrus sinensis [J]. Scientia Agricultura Sinica,2015,48(1):63-72.
[56]
HANC, HUAW B, LIJ G,et al. TOR promotes guard cell starch degradation by regulating the activity of β-AMYLASE1 in Arabidopsis [J]. The Plant Cell,2022,34(3):1038-1053.
ZHAOJ T, LIX F, LIH,et al. Research on the role of the soluble sugar in the regulation of physiological metabolism in higher plant[J]. Journal of Anhui Agricultural Sciences,2006,34(24):6423-6425.
[59]
GAOD, LIX, LIF Y,et al. Changes of crystalline structure and physicochemical properties of Pueraria Lobata var.thomsonii starch under water deficit[J]. PLoS One,2024,19(7):e0304373.