دورية أكاديمية

Implications of germination tolerances on invasion potential of Arthraxon hispidus.

التفاصيل البيبلوغرافية
العنوان: Implications of germination tolerances on invasion potential of Arthraxon hispidus.
المؤلفون: Beall MC; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, Virginia, United States of America., Barney JN; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, Virginia, United States of America., Welbaum GE; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, Virginia, United States of America., Reid JL; School of Plant and Environmental Sciences, Virginia Tech, Blacksburg, Virginia, United States of America.
المصدر: PloS one [PLoS One] 2024 Jun 04; Vol. 19 (6), pp. e0303638. Date of Electronic Publication: 2024 Jun 04 (Print Publication: 2024).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
أسماء مطبوعة: Original Publication: San Francisco, CA : Public Library of Science
مواضيع طبية MeSH: Germination*/physiology , Temperature* , Introduced Species*, Poaceae/physiology ; Poaceae/growth & development ; Salinity ; Hydrogen-Ion Concentration ; Seeds/growth & development ; Seeds/physiology ; Droughts
مستخلص: Arthraxon hispidus is an introduced, rapidly spreading, and newly invasive grass in the eastern United States, yet little is known about the foundational biology of this aggressive invader. Germination responses to environmental factors including salinity, pH, osmotic potential, temperature, and burial depth were investigated to better understand its germination niche. Seeds from six populations in the Mid-Atlantic US germinated 95% with an average mean time to germination of 3.42 days of imbibition in the dark at 23°C. Germination occurred across a temperature range of 8-37°C and a pH range of 5-10 (≥83%), suggesting that neither pH nor temperature will limit germination in many environments. Arthraxon hispidus germination occurred in high salinity (342 mM NaCl) and osmotic potentials as low as -0.83MPa. The NaCl concentration required to reduce germination by 50% exceeded salinity concentrations found in soil and some brackish water saltmarsh systems. While drought adversely affects A. hispidus, 50% germination occurred at osmotic potentials ranging from -0.25 to -0.67 MPa. Given the climatic conditions of North America, drought stress is unlikely to restrict germination in large regions. Finally, emergence greatly decreased with burial depth. Emergence was reduced to 45% at 1-2 cm burial depths, and 0% at 8 cm. Emergence depths in concert with adequate moisture, germination across a range of temperatures, and rapid germination suggests A. hispidus' seed bank may be short-lived in moist environments, but further investigation is warranted. Given the broad abiotic tolerances of A. hispidus and a widespread native range, A. hispidus has the potential to germinate in novel territories beyond its currently observed invaded range.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Beall et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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تواريخ الأحداث: Date Created: 20240604 Date Completed: 20240604 Latest Revision: 20240607
رمز التحديث: 20240607
مُعرف محوري في PubMed: PMC11149838
DOI: 10.1371/journal.pone.0303638
PMID: 38833460
قاعدة البيانات: MEDLINE
الوصف
تدمد:1932-6203
DOI:10.1371/journal.pone.0303638