Molecular characterization of phytoplasma associated with Echinops witches' broom disease

Ali Masoud Al-Subhi, Nadyla Abu Baker Al-Saady, Akhtar Jamal Khan

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Echinops spinosissimus plants in Al-Sharqiya region were found having excessive leaf and shoot growth and stunting reminiscent of phytoplasma symptoms. Polymerase chain reaction (PCR) was used to amplify 16S ribosomal gene of phytoplasma using universal primers P1/P7. The PCR amplifications from all infected plants yielded a product of 1.8 kb by P1/P7. Restriction fragment length polymorphism showed that E. spinosissimus phytoplasma is different from alfalfa and lime witches' broom phytoplasmas from Oman. Sequence homology results on BLAST and phylogenetic analysis of 16S rRNA gene sequences confirms that the closest phytoplasma relatives of Echinops witches' broom phytoplasma are members of pigeon pea witches' broom phytoplasma ribosomal group (16SrIX) that share more then 98% 16S rDNA sequence similarity.

Original languageEnglish
Pages (from-to)289-290
Number of pages2
JournalBulletin of Insectology
Volume60
Issue number2
Publication statusPublished - 2007

Fingerprint

Echinops
witches' broom
Phytoplasma
Pigeon pea witches'-broom phytoplasma
16SrIX (Pigeon pea witches'-broom group)
polymerase chain reaction
Oman
plant products
sequence homology
growth retardation
signs and symptoms (plants)
alfalfa
restriction fragment length polymorphism
ribosomal RNA
nucleotide sequences
shoots
phylogeny

Keywords

  • Echinops spinosissimus
  • PCR
  • Phytoplasma
  • RFLP
  • Ribosomal gene

ASJC Scopus subject areas

  • Insect Science

Cite this

Al-Subhi, A. M., Al-Saady, N. A. B., & Khan, A. J. (2007). Molecular characterization of phytoplasma associated with Echinops witches' broom disease. Bulletin of Insectology, 60(2), 289-290.

Molecular characterization of phytoplasma associated with Echinops witches' broom disease. / Al-Subhi, Ali Masoud; Al-Saady, Nadyla Abu Baker; Khan, Akhtar Jamal.

In: Bulletin of Insectology, Vol. 60, No. 2, 2007, p. 289-290.

Research output: Contribution to journalArticle

Al-Subhi, AM, Al-Saady, NAB & Khan, AJ 2007, 'Molecular characterization of phytoplasma associated with Echinops witches' broom disease', Bulletin of Insectology, vol. 60, no. 2, pp. 289-290.
Al-Subhi, Ali Masoud ; Al-Saady, Nadyla Abu Baker ; Khan, Akhtar Jamal. / Molecular characterization of phytoplasma associated with Echinops witches' broom disease. In: Bulletin of Insectology. 2007 ; Vol. 60, No. 2. pp. 289-290.
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