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Root structure syndromes of four families of monocots in the Middle Urals 被引量:1
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作者 Anna A.Betekhtina Daria E.Tukova Denis V.Veselkin 《Plant Diversity》 SCIE CAS CSCD 2023年第6期722-731,共10页
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... 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. 展开更多
关键词 MONOCOTS POACEAE CYPERACEAE Orchidaceae iridaceae Syndromes of roots structure
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Two new C-glycosylflavones from the leaves of Iris lactea var. chinensis 被引量:3
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作者 Wen Juan Shen Min Jian Qin +1 位作者 Pan Shu Chao Feng Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2008年第7期821-824,共4页
Two new acylated C-glycosylflavones were isolated from the leaves of Iris lactea var. chinensis, and their structures were elucidated on the basis of extensive NMR experiments and mass spectrometry methods and were as... Two new acylated C-glycosylflavones were isolated from the leaves of Iris lactea var. chinensis, and their structures were elucidated on the basis of extensive NMR experiments and mass spectrometry methods and were assigned as 5-hydroxy-4'- methoxyflavone-7-O-(β-D-2''''4''''-diacetylrhamnopyranosyl)-6-C-[ O-(α-L-6'''-acetyl-glucpyranosyl)-1→2-β-D-glucopyrano- side] (irislactin A) and 5-hydroxy-4',7-dimethoxyflavone-6-C-[O-(α-L-2''',3'''-diacetylrhanmo-pyranosyl)-1→ 2-β-D-glucopyranoside] (irislactin B). 展开更多
关键词 Iris lactea iridaceae Acylated C-glycosylflavone
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C-glycosylflavones from the leaves of Iris tectorum Maxim. 被引量:3
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作者 Yuhan Ma Huan Li +2 位作者 Binbin Lin Guokai Wang Minjian Qin 《Acta Pharmaceutica Sinica B》 SCIE CAS 2012年第6期598-601,共4页
A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′... A new C-glycosylflavone,5-hydroxyl-4′,7-dimethoxyflavone-6-C-[0-(α-L-3″-acetylrhamno-pyranosy)-1→2-β-D-glucopyranoside](1),along with five known C-glycosylflavones,5-hydroxy-4′,7-dimethoxyfavone-6-C-[0-(α-L-2′″-acetylrhamnopyranosy1)-1→2-β-D-glucopyranoside](2),embinin(3),embigenin(4),swertisin(5)and swertiajaponin(6)were isolated from the leaves of Iris tectorum Maxim.Their structures were elucidated on the basis of extensive NM R experiments and spectral methods and their cytotoxic activities against A 549(lung cancer)human cell lines were determined. 展开更多
关键词 Iris tectorum iridaceae C-GLYCOSYLFLAVONES Cytotoxic activities
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New Isoflavonoid Glycosides from the Rhizomes of Iris leptophylla Lingelsh.
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作者 Min-Jian Qin Rong Li +1 位作者 Xin Wang Wen-Cai Ye 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2007年第2期213-217,共5页
Two new isoflavonoid glucosides, 5-hydroxy-6,7-methylenedioxy-isoflavone-4'-O-D-glucopyranosyl (2→〉l)-L-rhamnoside (irilone-bioside) (compound 1) and 5,4'-methoxy-6,7-methylenedioxyisoflavone-3'-O-β-D-gluc... Two new isoflavonoid glucosides, 5-hydroxy-6,7-methylenedioxy-isoflavone-4'-O-D-glucopyranosyl (2→〉l)-L-rhamnoside (irilone-bioside) (compound 1) and 5,4'-methoxy-6,7-methylenedioxyisoflavone-3'-O-β-D-glucoside (irisleptophyllidin) (compound 2), together with five known compounds, nigricanin- 4'-O-β-D-glucoside (compound 3), irifloside (compound 4), irigenin (compound 5), 5, 3', 4'-trimethoxy-6,7-methylenedioxyisoflavone (compound 6), and nigricanin (compound 7) were isolated from the alcoholic extract of rhizomes of Iris leptophylla Lingelsh. Their structures were elucidated by spectroscopic methods. 展开更多
关键词 5-hydroxy-6 7-methylenedi-oxy-isoflavone-4'-O-D-glucopyranosyl (2→1)-L-rhamnoside (irilone-bioside) 5 4'-methoxy-6 7- methylenedioxyisoflavone-3'-O-β-D-glucoside (irisleptophyllidin) iridaceae Iris leptophylla isoflavonoid glycosides.
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