Molecular diversity of Sargassum populations from Oman Sea coasts

Document Type : Research Paper

Authors

University of Sistan and Baluchestan, Zahedan, Iran

10.22092/ijb.2022.128206

Abstract

Sargassum is widely distributed throughout rocky, coastal upwelling areas in the warm water of the Gulf of Oman and the Persian Gulf in Iran. This alga is of great environmental and industrial importance. However, little information is available that documents the genetic variability of the genus. In this study, fifteen populations of six species of Sargassum were analyzed with ISSR bands. These populations were collected from four localities of Oman sea coasts in 2 seasons (autumn and winter) from 2017 to 2020. The ISSR bands were treated as binary characters and coded accordingly. Genetic diversity parameters were determined in each population. Grouping of the populations with UPGMA and PCOA analysis separated the studied species into distinct clusters but few individuals of the Zygocarpiae section were spread in clusters. Analysis revealed significant genetic differences among populations and some degree of genetic admixture and gene exchange among the studied populations.

Keywords

Article Title [Persian]

تنوع ملکولی جمعیت‌های سارگاسوم از سواحل دریای عمان

Authors [Persian]

  • فاطمه سرگزی
  • شهلا هاشمی شهرکی
دانشکده علوم زیستی، دانشگاه سیستان و بلوچستان، زاهدان، ایران
Abstract [Persian]

سارگاسوم به طور گسترده­ای در سراسر مناطق صخره­ای ساحلی در آب­های گرم خلیج عمان و خلیج فارس در جنوب ایران حضور دارد. این جلبک از اهمیت زیست محیطی و صنعتی زیادی برخوردار است. با این حال اطلاعات کمی از تنوع ژنتیکی گونه­ها در دسترس است. در این مطالعه، پانزده جمعیت از شش گونه سارگاسوم با باندهای ISSR مورد تجزیه و تحلیل قرار گرفت. این جمعیت‌ها از چهار منطقه از سواحل دریای عمان در دوفصل پاییز و زمستان سال 1397 تا 1400 نمونه‌برداری شد. باندهای به‌دست آمده به عنوان صفات دوحالته در نظر گرفته و کد‌گذاری شد. پارامترهای تنوع ژنتیکی در هر جمعیت تعیین شد. گروه­بندی جمعیت­ها با تجزیه و تحلیل UPGMA و PCOA، گونه­های مورد مطالعه را به خوشه­های متمایز جدا کرد اما تعداد کمی از افراد بخش زیگوکارپیا (Zygocarpiae) در خوشه­ها پخش شدند. تجزیه و تحلیل داده­ها تفاوت ژنتیکی معنی­دار در میان جمعیت­ها و درجه­ای از اختلاط ژنتیکی و تبادل ژن در میان جمعیت­های مورد مطالعه را نشان داد.

Keywords [Persian]

  • Sargassum
  • Gulf of Oman
  • genetic variability
  • ISSR bands
  • UPGMA
  • PCOA

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The Iranian Journal of Botany
Volume 28, Issue 2
December 2022
Pages 176-181

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History

  • Receive Date: 01 June 2022
  • Revise Date: 23 November 2022
  • Accept Date: 06 December 2022

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