caa a22 4500 605517967 CHVBK 20210128100722.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00572-015-0632-9 doi (NATIONALLICENCE)springer-10.1007/s00572-015-0632-9 Differential effects of ephemeral colonization by arbuscular mycorrhizal fungi in two Cuscuta species with different ecology [Elektronische Daten] [Behrang Behdarvandi, Frédérique Guinel, Mihai Costea] Seedlings of parasitic Cuscuta species are autotrophic but can survive only a short period of time, during which they must locate and attach to a suitable host. They have an ephemeral root-like organ considered not a "true” root by most studies. In the present study, two species with contrasting ecology were examined: Cuscuta gronovii, a North American riparian species, and Cuscuta campestris, an invasive dodder that thrives in disturbed habitats. The morphology, structure, and absorptive capability of their root-like organ were compared, their potential for colonization by two species of arbuscular mycorrhizal fungi (AMF) was assessed, and the effect of the AMF on seedling growth and survival was determined. The root of both species absorbed water and interacted with AMF, but the two species exhibited dissimilar growth and survival patterns depending on the colonization level of their seedlings. The extensively colonized seedlings of C. gronovii grew more and survived longer than non-colonized seedlings. In contrast, the scarce colonization of C. campestris seedlings did not increase their growth or longevity. The differential growth responses of the AMF-colonized and non-colonized Cuscuta species suggest a mycorrhizal relationship and reflect their ecology. While C. gronovii roots have retained a higher ability to interact with AMF and are likely to take advantage of fungal communities in riparian habitats, the invasive C. campestris has largely lost this ability possibly as an adaptation to disturbed ecosystems. These results indicate that dodders have a true root, even if much reduced and ephemeral, that can interact with AMF. Springer-Verlag Berlin Heidelberg, 2015 Parasitic plants nationallicence Dodder nationallicence Mycorrhizal fungi nationallicence Root nationallicence Function nationallicence Seedling survival nationallicence Behdarvandi Behrang Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut Guinel Frédérique Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut Costea Mihai Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut Mycorrhiza Springer Berlin Heidelberg 25/7(2015-10-01), 573-585 0940-6360 25:7<573 2015 25 572 https://doi.org/10.1007/s00572-015-0632-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00572-015-0632-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Behdarvandi Behrang Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut NATIONALLICENCE 700 1- Guinel Frédérique Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut NATIONALLICENCE 700 1- Costea Mihai Department of Biology, Wilfrid Laurier University, N2L 3C5, Waterloo, ON, Canada aut NATIONALLICENCE 773 0- Mycorrhiza Springer Berlin Heidelberg 25/7(2015-10-01), 573-585 0940-6360 25:7<573 2015 25 572