&lt;p&gt;&lt;strong&gt;&lt;em&gt;Hopea sasidharanii&lt;/em&gt;&lt;/strong&gt;&lt;strong&gt; (Dipterocarpaceae)—a new species from southern Western Ghats, India&lt;/strong&gt;&lt;/p&gt;

Robi, A. J.; Sujanapal, P.; Sreekumar, V. B.; Sanil, Madambi Sankarankutty; Dantas, K. J.

doi:10.11646/phytotaxa.429.2.7

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In India, the family is represented by 32 species under 6 genera, distributed mainly in the Western Ghats, northeastern states and the Andaman‐Nicobar Islands. The Western Ghats harbour 18 species and one variety in five genera; 14 species are endemic and 13 under the risk of extinction (KFRI, 1978; FAO, 1995; Sasidharan, 2004; Nayar & al., 2014; IUCN, 2020; Robi & al., 2020).…”

Section: Introductionmentioning

confidence: 99%

Dipterocarps used India as a raft from Gondwana to Eurasia

Sanil

Balakrishnan

Sreekumar

et al. 2022

TAXON

Self Cite

View full text Add to dashboard Cite

It has been hypothesized that most Asian tropical lineages have originated in Gondwana with the Indian subcontinent playing a crucial role in the dispersal of ancestral Gondwanan taxa. The disjunct distribution of dipterocarps and the fossil record in India support the Gondwana hypothesis. This is the first comprehensive study addressing the evolutionary and biogeographic relationships of dipterocarps in the Indian subcontinent to test the Gondwana hypothesis. A Bayesian phylogenetic tree of the Dipterocarpaceae family including the Indian counterparts corroborates the monophyly of subfamilies/tribes and shows new biogeographic affinities. Molecular dating reveals the Cretaceous origin of Dipterocarpaceae. Diversification of major lineages occurred during the Pliocene-Miocene epochs. The DEC analysis ascertains the Gondwanan origin and dispersal route from the Madagascar (Africa)-India-Sri Lanka-Seychelles block to Eurasia. The biogeographic analysis suggests early vicariance followed by an outof-India dispersal of Dipterocarpaceae. Three dispersal events from India to the remainder of Asia at 47.6 Ma, 42.53 Ma and 37.6 Ma are identified. There probably was a biotic interchange between India and mainland Asia via Sumatra following the collision of the Indian plate with Eurasia. Molecular dating and dispersal events coincide with the geological events. During the Miocene, uplift of the Himalayan-Tibetian plateau induced climatic variation, which seems to have resulted in the extinction of major Indian dipterocarp lineages and reverse dispersal into India. Hopea-Shorea, one of the earliest diverged lineages, originated in Southeast Asia. The establishment of Southeast Asian monsoon climate may have favoured allopatric speciation and diversification of Southeast Asian lineages also resulting in further dispersal into India.

show abstract

Section: Introductionmentioning

confidence: 99%

Dipterocarps used India as a raft from Gondwana to Eurasia

Sanil

Balakrishnan

Sreekumar

et al. 2022

TAXON

Self Cite

View full text Add to dashboard Cite

show abstract

“…In India, 12 species and one variety have been recorded (Sanil et al 2020) of which only two species have been known cytologically (Table 1). Ten species are endemic to the Western Ghats of which eight are exclusively restricted to Kerala and are threatened (Nayar et al 2014, Sasidharan 2017, Robi et al 2020. The level of endemism in the Western Ghats suggests that it is one of the centers for the evolution and diversification of Hopea (Sanil et al 2017).…”

mentioning

confidence: 99%