Holtasóleyjar
(Endurbeint frá Dryas)
Dryas er ættkvísl fjölærra, jarðlægra hálfrunna í rósaætt. Ættkvíslin er nefnd eftir Grísku nymph Dryad. Staðsetning Dryas ættkvíslarinnar innan Rosaceae hefur verið óljós.[1][2] Ættkvíslin var áður staðsett í undirættinni Rosoideae, en er nú í Dryadoideae.[3]
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 Dryas × suendermannii
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 Útbreiðsla Holtasóleyja
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| Tegundir | ||||||||||||||
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Tegundir breyta
Dryas samanstendur af þremur tegundum, en ættkvíslin þarfnast endurskoðunar:[4]
- Dryas drummondii Richardson ex Hook.
- var. drummondii Richardson ex Hook.
- var. tomentosa (Farr) L.O. Williams
- Dryas integrifolia Vahl
- subsp. chamissonis (Spreng.) Scoggan
- subsp. crenulata (Juz.) J. Kozhevn
- subsp. integrifolia Vahl
- subsp. sylvatica (Hultén) Hultén
- Dryas octopetala L.—Rjúpnalauf, Holtasóley
- subsp. alaskensis (A.E. Porsild) Hultén
- subsp. hookeriana (Juz.) Hultén
- subsp. octopetala L.
- var. angustifolia C.L. Hitchc.
- var. argentea Blytt
- var. kamtschatica (Juz.) Hultén
- var. octopetala L.
- subsp. punctata (Juz.) Hultén
Blendingar breyta
Tveir blendingar hafa verið staðfestir:
- Dryas × suendermannii Kellerer ex Sundermann—(D. drummondii × D. octopetala)
- Dryas × wyssiana Beauverd—(D. drummondii × D. integrifolia)
Niturbinding breyta
Sumar tegundir Dryas plantna hafa rótarhnýði sem hýsa niturbindandi bakteríur af ættkvíslinniFrankia.[5]
- Dryas drummondii myndar rótarhnýði og bindur nitur með Frankia.[6][7]
- Dryas integrifolia myndar ekki rótarhnýði og bindur ekki nitur.[8][9][10]
- Dryas octopetala myndar ekki rótarhnýði og bindur ekki nitur.[8]
- Dryas × suendermannii (D. drummondii × D. octopetala) myndar ekki rótarhnýði og bindur ekki nitur.[11]
Tilvísanir breyta
- ↑ Morgan DR, Soltis DE, Robertson KR. (1994). „Systematic and evolutionary implications of rbcL sequence variation in Rosaceae“. Am J Bot. 81 (7): 890–903. JSTOR 2445770..
- ↑ Eriksson, Torsten; og fleiri (2003), „The Phylogeny of Rosoideae (Rosaceae) Based on Sequences of the Internal Transcribed Spacers (ITS) of Nuclear Ribosomal DNA and the trnL/F Region of Chloroplast DNA“ (PDF), International Journal of Plant Sciences, 164 (2): 197, doi:10.1086/346163
- ↑ Potter D, Eriksson T, Evans RC, Oh S, Smedmark JEE, Morgan DR, Kerr M, Robertson KR, Arsenault M, Dickinson TA, Campbell CS. (2007). „Phylogeny and classification of Rosaceae“. Plant Systematics and Evolution. 266 (1–2): 5–43. doi:10.1007/s00606-007-0539-9..
- ↑ Skrede I, Eidesen PB, Piñeiro Portela R, Brochmann C. (2006). „Refugia, differentiation and postglacial migration in arctic-alpine Eurasia, exemplified by the mountain avens (Dryas octopetala L.)“. Molecular Ecology. 15 (7): 1827–1840. doi:10.1111/j.1365-294X.2006.02908.x.
- ↑ Swensen SM, Mullin BC. (1997). „The impact of molecular systematics on hypotheses for the evolution of root nodule symbioses and implications for expanding symbioses to new host plant genera“. Plant and Soil. 194: 185–192. doi:10.1023/A:1004240004063. JSTOR 42948119..
- ↑ Becking JH. (1984). „Identification of the endophypte of Dryas and Rubus (Rosaceae)“. Plant and Soil. 78 (1–2): 105–128. JSTOR 42934565.
- ↑ Kohls SJ, Baker DD, van Kessel C, Dawson JO. (2004). „An assessment of soil enrichment by actinorhizal N2 fixation using δ15N values in a chronosequence of deglaciation at Glacier Bay, Alaska“. Plant and Soil. 254 (1): 11–17. doi:10.1023/A:1024950913234.
- ↑ 8,0 8,1 Kohls SJ, van Kessel C, Baker DD, Grigal DF, Lawrence DB. (1994). „Assessment of N2 fixation and N cycling by Dryas along a chronosequence within the forelands of the Athabasca Glacier, Canada“. Soil Biology and Biochemistry. 26 (5): 623–632. doi:10.1016/0038-0717(94)90251-8.
- ↑ Deslippe JR, Egger KN. (2006). „Molecular diversity of nifH genes from bacteria associated with high arctic dwarf shrubs“. Microbial Ecology. 51 (4): 516–25. doi:10.1007/s00248-006-9070-8. PMID 16649061.
- ↑ Markham JH. (2009). „Does Dryas integrifolia fix nitrogen?“. Botany. 87 (11): 1106–1109. doi:10.1139/B09-071.
- ↑ (Reported as Dryas drummondii var. eglandulosa.) Kohls SJ, Thimmapuram J, Buschena CA, Paschke MW, Dawson JO. (1994). „Nodulation patterns of actinorhizal plants in the family Rosaceae“. Plant and Soil. 162 (2): 229–239. doi:10.1007/BF01347710. JSTOR 42939545.
Ytri tenglar breyta
- Germplasm Resources Information Network: Dryas Geymt 24 september 2015 í Wayback Machine
- Huxley, A. (1992). New RHS Dictionary of Gardening. Macmillan [D. × suendermannii].
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