TY - JOUR
T1 - Arbuscular mycorrhizal symbiosis and achene mucilage have independent functions in seedling growth of a desert shrub
AU - Hu, Dandan
AU - Baskin, Jerry M.
AU - Baskin, Carol C.
AU - Wang, Zhaoren
AU - Zhang, Shudong
AU - Yang, Xuejun
AU - Huang, Zhenying
N1 - Publisher Copyright:
© 2018 Elsevier GmbH
PY - 2019/1
Y1 - 2019/1
N2 - Arbuscular mycorrhizal (AM) symbiosis can play a role in improving seedling establishment in deserts, and it has been suggested that achene mucilage facilitates seedling establishment in sandy deserts and that mucilage biodegradation products may improve seedling growth. We aimed to determine if AM symbiosis interacts with achene mucilage in regulating seedling growth in sand dunes. Up to 20 A M fungal taxa colonized Artemisia sphaerocephala roots in the field, and mycorrhizal frequency and colonization intensity exhibited seasonal dynamics. In the greenhouse, total biomass of AM fungal-colonized plants decreased, whereas the root/shoot ratio increased. AM symbiosis resulted in increased concentrations of nutrients and chlorophyll and decreased concentrations of salicylic acid (SA) and abscisic acid (ABA). Achene mucilage had a weaker effect on biomass and on nutrient, chlorophyll, and phytohormone concentration than did AM symbiosis. We suggest that AM symbiosis and achene mucilage act independently in enhancing seedling establishment in sandy deserts.
AB - Arbuscular mycorrhizal (AM) symbiosis can play a role in improving seedling establishment in deserts, and it has been suggested that achene mucilage facilitates seedling establishment in sandy deserts and that mucilage biodegradation products may improve seedling growth. We aimed to determine if AM symbiosis interacts with achene mucilage in regulating seedling growth in sand dunes. Up to 20 A M fungal taxa colonized Artemisia sphaerocephala roots in the field, and mycorrhizal frequency and colonization intensity exhibited seasonal dynamics. In the greenhouse, total biomass of AM fungal-colonized plants decreased, whereas the root/shoot ratio increased. AM symbiosis resulted in increased concentrations of nutrients and chlorophyll and decreased concentrations of salicylic acid (SA) and abscisic acid (ABA). Achene mucilage had a weaker effect on biomass and on nutrient, chlorophyll, and phytohormone concentration than did AM symbiosis. We suggest that AM symbiosis and achene mucilage act independently in enhancing seedling establishment in sandy deserts.
KW - Artemisia sphaerocephala
KW - Biomass
KW - Chlorophyll
KW - Nutrients
KW - Phytohormones
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U2 - 10.1016/j.jplph.2018.11.010
DO - 10.1016/j.jplph.2018.11.010
M3 - Article
C2 - 30530198
AN - SCOPUS:85057595692
SN - 0176-1617
VL - 232
SP - 1
EP - 11
JO - Journal of Plant Physiology
JF - Journal of Plant Physiology
ER -