In the article presented below, the topic of Chloridoideae will be addressed from different perspectives and approaches. Its origins, its evolution over time and its importance today will be analyzed. In addition, its implications in various areas will be delved into, from the social to the scientific, including the cultural and economic aspects. We will seek to offer a comprehensive and global vision of Chloridoideae, so that the reader can understand its relevance and influence in today's world. Through a multidisciplinary approach, we aim to delve into the different aspects that define Chloridoideae, providing detailed and updated information on this broad and diverse topic.
Chloridoideae | |
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Finger millet (Eleusine coracana) in Nepal | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Monocots |
Clade: | Commelinids |
Order: | Poales |
Family: | Poaceae |
Clade: | PACMAD clade |
Subfamily: | Chloridoideae Kunth ex Beilschm. |
Tribes | |
Chloridoideae is one of the largest subfamilies of grasses, with roughly 150 genera and 1,600 species, mainly found in arid tropical or subtropical grasslands. Within the PACMAD clade, their sister group is the Danthonioideae. The subfamily includes widespread weeds such as Bermuda grass (Cynodon dactylon) or goosegrass (Eleusine indica), but also millet species grown in some tropical regions, namely finger millet (Eleusine coracana) and teff (Eragrostis tef).
With the exception of some species in Ellisochloa and Eleusine indica, most of the subfamily's species use the C4 photosynthetic pathway. The first evolutionary transition from C3 to C4 photosynthesis in the grasses probably occurred in this subfamily, around 32 to 25 million years ago in the Oligocene.
Relationships of tribes in the Chloridoideae according to a 2017 phylogenetic classification, also showing the Danthonioideae as sister group:
Chloridoideae | |
The following genera have not been assigned to a tribe: