The nucleotide sequence and secondary structure of two representative variants from the Group III citrus viroids. CVd-IIIa (297 bases) and CVd-IIIb (294 bases) were determined. The variants are related to the apple scar skin viroid (ASSVd) family. Although smaller in size than any of the ASSVd-related viroids, the central conserved region as well as most of the terminal conserved region of ASSV...

Abstract Background and Aims: Apple scar skin disease (ASSD) is one of the destructive diseases of pome fruits which is caused by ASSVd. Case presentation: We report molecular detection of ASSVd in symptomatic apples cv. Red Delicious with simultaneous presence of a new variant of HSVd from Khorasan Razavi province. Conclusion: This is the first report on the association of HSVd with...

apple scar skin viroid (assvd) is one of the most destructive viroid diseases in pome fruits orchards which can cause significant economic losses. symptoms of this viroid including scaring, distortion and dappling were seen in some apple orchards in east-northern of iran. sampling was carried out from apple and pear orchards. the rna was extracted by silica capture method from leaves. assvd was...

apple scar skin disease (assd) is one of the destructive diseases of pome fruits which is caused by assvd. we report molecular detection of assvd in symptomatic apples cv. red delicious with simultaneous presence of a new variant of hsvd from khorasan razavi province. this is the first report on the association of hsvd with assvd in apple trees showing merely symptoms of apple dapple on the fruit.

Low-chilling apple varieties are gaining attention in plain regions with high temperatures but viruses also adapting to these conditions. In this report, we have characterized Apple stem grooving virus and scar skin viroid from the low-chilling samples collected district District Mandla of Madhya Pradesh Kangra Himachal Pradesh, India. To our knowledge, is first report ASGV ASSVd infecting

Apples are the third most produced fruit in world, behind bananas and oranges, terms of volume. Over past ten years, Serbia's apple production has nearly doubled. less subjected to viral viroid attacks than other species. Most viruses cause no visible symptoms on plant's organs, trees either seem be good condition or, case sensitive cultivars, their yield is reduced. Apple stem pitting virus (A...