Phenolic compounds as chemical markers of low taxonomic levels in the marine algal genus Laurencia in the Persian Gulf

Document Type: Research Paper


1 Former MSc Student, Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran

2 Associate Prof., Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran

3 Prof., Department of Pharmacognosy, Faculty of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran


The genus Laurencia(Rhodomelaceae), a complex group, has 285 species and infraspecific names. Identification and taxonomy of these taxa, mainly has been based on flexible morphological characters which have led to a complicated taxonomy in this group. Nowadays, taxonomical study of this group has changed a lot by using reproductive characters, anatomical differences and modern molecular studies. In this study, the samples have been collected from some areas of the Persian Gulf coasts and islands of Hormozgan province (southern Iran). Afterward, their anatomical, reproductive and chemical properties have been examined. The outcomes revealed that, the Folin-Ciocalteau method can be utilized as a taxonomical character in ultimate identification and the confirmation among species and varieties of this genus. It became clear that, there is a meaningful difference between two samples which were under study due to measuring the amount of polyphenols and finally, L. obtusa var. mollissima was separated from type variety of L. obtusa.


Main Subjects

Article Title [Persian]

ترکیبات فنولی به عنوان نشانگرهای شیمیایی در سطوح پایین آرایه‌شناسی جنس جلبک دریایی Laurencia در خلیج فارس

Authors [Persian]

  • فروغ صالحی‌پور باورصاد 1
  • سعید افشارزاده 2
  • علیرضا علی‌قنادی 3
1 دانش‌آموخته کارشناسی ارشد، گروه زیست شناسی، دانشکده علوم، دانشگاه اصفهان، اصفهان، ایران
2 دانشیار گروه زیست شناسی، دانشکده علوم، دانشگاه اصفهان، اصفهان، ایران
3 استاد گروه فارماکوگنوزی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران
Abstract [Persian]

مجموعه جلبک­ های قرمز جنس Laurencia دارای 285 گونه و زیرگونه می­ باشد. شناسایی و تشخیص بسیاری از گونه­ های این گروه جلبکی عمدتا براساس خصوصیات ریخت‌شناسی متغیر آن‌ها بوده که منجر به پیچیدگی آرایه­ شناسی این گروه جلبکی گردیده است. امروزه، مطالعه این گروه با استفاده از ویژگی­ های تولیدمثلی، تفاوت­ های تشریحی و مطالعات مدرن مولکولی موجب تغییرات آرایه­ شناسی فراوانی گردیده است. در این مطالعه، نمونه­ هایی از برخی نواحی ساحلی خلیج فارس در استان هرمزگان جمع‌آوری شده و صفات تشریحی، تولیدمثلی و همچنین شیمیایی آن‌ها مورد ارزیابی قرار گرفته است. نتایج حاصل نشان داد که استفاده از روش فولین-سیوکالتو می­ تواند به عنوان یک نشانگر شیمیایی در تشخیص نهایی و تایید تمایز بین گونه­ ها و حتی سطوح پایین آرایه‌شناسی این جنس مورد استفاده قرار گیرد. لذا با بررسی مقدار پلی‌فنول­ های بین دو نمونه­ مورد مطالعه از گونه­ L. obtusa، مشخص گردید که در بندر لنگه تفاوت معنی ­داری با یکدیگر دارند و در نهایت، واریته mollissima از واریته تیپ گونه فوق مشتق گردید.

Keywords [Persian]

  • جلبک قرمز
  • شناسایی
  • شیمیوتاکسونومی
  • گالیک اسید
  • ایران
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