Response of Potato Cultivars to Five Isolates Belonging to Four Strains of Potato virus Y
Response of Potato Cultivars to Five Isolates Belonging to Four Strains of Potato virus Y
复制标题
马铃薯品种对马铃薯 Y 病毒 4 株的 5 株分离株的响应
DOI：
10.1094/pdis-01-12-0018-re
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发表时间：
2012-10-01
期刊：
影响因子：
4.5
通讯作者：
Nie, Xianzhou
中科院分区：
文献类型：
--
作者：
Nie, Bihua;Singh, Mathuresh;Nie, Xianzhou
Nie，B.，辛格，M.，Murphy，A.，Sullivan，A.，Xie，C.，中国科学院，和Nie，X. 2012.马铃薯品种对马铃薯Y病毒（Potato virus Y，PVY）4个株系的5个分离物的反应。研究了14个马铃薯品种对马铃薯Y病毒（Potato virus Y，PVY）4个株系（普通株系[PVY（O）]、烟草脉坏死株系[PVYN：O]和非重组马铃薯块茎坏死株系[PVYNTN]）5个分离物的初侵染和二次侵染反应。对于初次感染实验，在用PVY分离株机械接种后每天监测叶子症状直到收获;并且对于二次感染实验，从植物出苗直到收获定期监测叶子症状。块茎症状（即，块茎坏死环斑）在收获和每月收获后长达4个月进行检查。在这两种感染中，症状根据马铃薯品种和病毒株或分离物而显著不同。在初次感染中，接种PVY分离物后，在“AC Chaleur”、“Eramosa”、“Goldrush”、“Jemseg '、”Katandin“、”Ranger Russet“和”育空地区Gold“的接种叶片上发生局部病变，随后在后来出现的未接种叶片上发生系统性坏死。相比之下，“CalWhite”、“La Rouge”、“Red LaSoda”、“Russet Burberry”、“Russet Norkotah”和“上级”植物在接种的叶子上没有表现出任何明显症状，但在感染PVYO分离物后，后期出现的叶子上出现了轻度至严重的马赛克。在所有品种中，PVYN诱导的花叶为近无到轻度，PVYN：O诱导的花叶为轻度到重度。PVYNTN诱导轻度至重度花叶在所有品种的植物，除了AC Chaleur，'Cherokee'，和育空地区黄金，这发展成可见的全身坏死。在AC Chaleur、切罗基和育空地区Gold的PVYNTN感染植物的块茎中观察到坏死的环斑。PVYN-Jg在切罗基上也引起块茎症状。在继发性感染中，症状通常比原发性感染更严重，即使症状类型没有改变。如在温室中一样，在田间的AC Chaleur、切罗基、Eramosa、Goldrush、Jemseg、Katandin、Ranger Russet和育空地区Gold中观察到明显的症状严重性模式（PVYO-FL > PVYO-RB > PVYNTN-S1> PVYN：O-Mb 58> PVYN-Jg）。
Nie, B., Singh, M., Murphy, A., Sullivan, A., Xie, C., and Nie, X. 2012. Response of potato cultivars to five isolates belonging to four strains of Potato virus Y Plant Dis. 96:1422-1429.The responses of 14 potato cultivars to five Potato virus Y (PVY) isolates belonging to four strains (ordinary [PVY (O)], tobacco veinal necrosis [PVYN] N:O group [PVYN:O], and nonrecombinant potato tuber necrotic [PVYNTN]) were studied in primary and secondary infections. For the primary infection experiments, foliage symptoms were monitored daily after mechanical inoculation with a PVY isolate until harvest; and, for the secondary infection experiments, foliage symptoms were monitored regularly from plant emergence until harvest. Tuber symptoms (namely, tuber necrotic ringspots) were checked at harvest and monthly postharvest for up to 4 months. In both infections, symptoms varied significantly depending on potato cultivar and virus strain or isolate. In primary infections, local lesions occurred on inoculated leaves of 'AC Chaleur', 'Eramosa', 'Goldrush', 'Jemseg', 'Katandin', 'Ranger Russet', and 'Yukon Gold' after inoculation with PVY isolates, followed by systemic necrosis on latterly emerged uninoculated leaves. In contrast, plants of 'CalWhite', 'La Rouge', 'Red LaSoda', 'Russet Burbank', 'Russet Norkotah', and 'Superior' did not exhibit any visible symptoms on inoculated leaves but developed mild to severe mosaic on latterly emerged leaves after infection with PVYO isolates. In all cultivars, near-symptomless to mild mosaic was induced by PVYN and mild to severe mosaic by PVYN:O. PVYNTN induced mild to severe mosaic in plants of all cultivars except AC Chaleur, 'Cherokee', and Yukon Gold, which developed visible systemic necrosis. Necrotic ringspots were observed in tubers of PVYNTN-infected plants of AC Chaleur, Cherokee, and Yukon Gold. The tuber symptoms were also incited by PVYN-Jg on Cherokee. In secondary infections, the symptoms were generally more severe than primary infections even though the symptom types did not alter. As in the greenhouse, a clear symptom severity pattern (PVYO-FL > PVYO-RB > PVYNTN-Sl > PVYN:O-Mb58 > PVYN-Jg) was observed in AC Chaleur, Cherokee, Eramosa, Goldrush, Jemseg, Katandin, Ranger Russet, and Yukon Gold in the field.