@Article{phyton.2023.027043,
AUTHOR = {Yawei Dong, Ziyue Guo, Qun Ma, Zhiming Xin, Jin Tao, Jiatai Tian, Jinlei Zhu, Zhiming Zhang, Jianqiang Qian},
TITLE = {Soil Moisture Rather than Soil Nutrient Regulates the Belowground Bud Bank of Rhizomatous Species <i>Psammochloa villosa</i> in Arid Sand Dunes},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {92},
YEAR = {2023},
NUMBER = {5},
PAGES = {1301--1309},
URL = {http://www.techscience.com/phyton/v92n5/51855},
ISSN = {1851-5657},
ABSTRACT = {In arid and semi-arid sand dune ecosystems, belowground bud bank plays an important role in population regeneration and vegetation restoration. However, the responses of belowground bud bank size and composition to
sand burial and its induced changes in soil environmental factors have been rarely studied. In arid sand dunes
of Northwestern China, we investigated belowground bud bank size and composition of the typical rhizomatous
psammophyte <i>Psammochloa villosa</i> as well as three key soil environmental factors (soil moisture, total carbon and
total nitrogen) under different depths of sand burial. Total buds and rhizome buds increased significantly with
increasing burial depth, whereas tiller buds first increased and then decreased, with a peak value at the depth
of 20–30 cm. Soil moisture increased significantly with sand burial depth, and was positively correlated with
the number of all buds and rhizome buds. Soil total carbon concentration first increased and then decreased with
sand burial depth, and total nitrogen concentration was significantly lower under deep sand burial than those at
shallow depths, and only the number of tiller buds was positively correlated with soil total nitrogen concentration.
These results indicate that soil moisture rather than soil nutrient might regulate the belowground bud bank of <i>P.
villosa</i>, and that clonal psammophytes could regulate their belowground bud bank in response to sand burial and
the most important environmental stress (i.e., soil moisture). These responses, as the key adaptive strategy, may
ensure clonal plant population regeneration and vegetation restoration in arid sand dunes.},
DOI = {10.32604/phyton.2023.027043}
}