Root structure syndromes of four families of monocots in the Middle Urals  

作　　者：Anna A.Betekhtina Daria E.Tukova Denis V.Veselkin 

机构地区：[1]Ural Federal University Named After the First President of Russia B.N.Yeltsin,19 Mira Street,Ekaterinburg 620002,Russia [2]Ural Branch of the Russian Academy of Sciences,Institute of Plant and Animal Ecology,8 Marta Street,Ekaterinburg 620144,Russia

出　　处：《Plant Diversity》2023年第6期722-731,共10页植物多样性（英文版）

基　　金：a part of the research project of the Institute of Plant and Animal Ecology,Ural Branch,Russian Academy of Sciences (№122021000092-9)

摘　　要：The present article tests the following general assumption:plant taxa with different specializations towards mycorrhizal interactions should have different root syndromes.Roots of 61 species common in boreal zone were studied:16 species of Poaceae,24 species of Cyperaceae,14 species of Orchidaceae,and 7 species of Iridaceae.Using a fixed material of 5 individuals of each species,the following was determined:number of orders of branching roots;transverse dimensions of root,stele and cortex;number of primary xylem vessels and exodermis layers;length of root hairs;abundance of mycorrhiza.Species of each family had well-defined syndromes.Roots of Orchidaceae and Iridaceae were thick with a large stele and developed exodermis.Orchidaceae had no branching roots and had long root hairs.In Iridaceae,roots were branched,and root hairs were short.Roots of Poaceae and Cyperaceae were thin with a relatively thin stele.Root hairs were short in Poaceae and long in Cyperaceae.Our finding that root syndromes of four families of monocots differed is a new and unexpected discovery.The high specificity of root syndromes in Cyperaceae,Iridaceae,Poaceae,and Orchidaceae indicates that species of these families use different strategies to obtain water and soil nutrients.

关 键 词：MONOCOTS POACEAE CYPERACEAE Orchidaceae IRIDACEAE Syndromes of roots structure 

分 类 号：Q949[生物学—植物学]