A taxonomic revision of Lemna sect. Uninerves (Lemnaceae)
Lemna sect. Uninerves Hegelm. consists of three species, Lemna minuta Kunth (synonym L. minuscula), L. valdiviana Phil. and L. yungensis Landolt. Lemna yungensis was discovered growing on rocks in the Yungas in Bolivia by E. Landolt and was described just 20 years ago. In the original description,...
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| 格式: | Research article |
| 语言: | English |
| 出版: |
2022
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| 主题: | |
| 在线阅读: | http://scholar.dlu.edu.vn/handle/123456789/1029 |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| 总结: | Lemna sect. Uninerves Hegelm. consists of three species, Lemna minuta Kunth (synonym L. minuscula), L. valdiviana
Phil. and L. yungensis Landolt. Lemna yungensis was discovered growing on rocks in the Yungas in Bolivia by E. Landolt and
was described just 20 years ago. In the original description, Landolt reported that this species is closely related to L. valdiviana
and that it is difficult to distinguish the three species on a morphological basis. Therefore, the taxonomic position and status of
L. yungensis remained controversial. Here, we carried out a detailed taxonomic study, integrating approaches that include quantitative
morphometry, metabolomic profiling by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOFMS)
as well as molecular genetic analysis using amplified fragment length polymorphism (AFLP), and barcoding of plastidic
sequences. We also investigated genome sizes of clones of the three species. Whereas L. minuta can easily be differentiated
from L. valdiviana and L. yungensis, it was not possible to distinguish L. valdiviana from L. yungensis with any of the methods used.
These data imply that L. yungensis is identical to L. valdiviana. Thus, the name L. yungensis should be synonymised with the name
L. valdiviana, since this is the older name. |
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