Neonauclea viridiflora (Rubiaceae), a New Species of Naucleeae from Eastern Samar, with Notes on Myrmecophytic Species in the Philippines

Ordas, Jorge Anton D.; Banag, Cecilia I.; Alejandro, Grecebio Jonathan D.

doi:10.1600/036364417x695592

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…Uy and Alejandro 2012;Obico and Alejandro 2013;Banag and Alejandro 2014;Villanueva et al 2016;Banag et al 2017;Chavez et al 2021;Ordas et al 2021). In addition, the recollection and discovery of new species Salamanes et al 2015;Alejandro and Meve 2016;Arriola et al 2016;Ordas et al 2017;Alfeche et al 2020;Biag and Alejandro 2020;Batuyong et al 2021b). Tantamount to these studies is an understanding of the distribution, ecology and biology of species within the family, in various ecosystems, which still remain largely limited and incomplete.…”

Section: Introductionmentioning

confidence: 99%

Inventory of Rubiaceae species in Mt. Pao Range, Ilocos Norte, Northwestern Luzon, Philippines

2021

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Abstract. Batuyong MAR, Calaramo MA, Alejandro GJD. 2021. Inventory of Rubiaceae species in Mt. Pao Range, Ilocos Norte, Northwestern Luzon, Philippines. Biodiversitas 22: 3604-3612. Botanical assessments in the Philippines are mostly conducted on declared Protected Areas (PAs). However, many remaining potentially interesting and largely unexplored floristic sites are not considered PA, one of which is the Mt. Pao Range in the Municipality of Adams, located in Ilocos Norte, Philippines. Among the flowering plant family, Rubiaceae is one with the largest number of endemic species and genera in the Philippines Thus, floristic surveys of Rubiaceae species were conducted, and collections were made from September 2019 to March 2021. A total of 39 species belonging to 13 tribes and 24 genera of the family were recorded. These constitute 7.09% of the total Philippine Rubiaceae. Of these species, 18 are Philippine endemics while two are considered narrow endemic to Mt. Pao. Two endemic genera were also found in the area Antherostele and Kanapia. According to the Updated National List of Threatened Philippine Plants, their conservation status in the Department of Environment and Natural Resources (DENR) Administrative Order No. 2017-11 found one species assessed as Critically Endangered (Antherostele callophylla). This study contributes to the data on the distribution and occurrence of Philippine Rubiaceae. Moreover, it also highlights the area's importance with the presence of threatened and endemic species as an area of concern for protection and conservation.

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Section: Introductionmentioning

confidence: 99%

Inventory of Rubiaceae species in Mt. Pao Range, Ilocos Norte, Northwestern Luzon, Philippines

2021

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“…Among the 13,500 plant species recorded in the Philippines, more than 3,500 are indigenous, and 1,500 of these species are medicinal [10]. The Philippine archipelago has caught many scientists' attention because of its enormous floral diversity [11]. Some Rubiaceae species were found to be sources of new secondary metabolites for therapeutic purposes, but phytochemical investigations have been conducted only on few species [7].…”

Section: Introductionmentioning

confidence: 99%

“…is a Philippine endemic species that belongs to Family Rubiaceae. It is distinguished by its elliptic to ovate leaf blade, glabrous stipule texture and hypanthia, densely sericeous persistent calyx, and white to dry pink corolla color [11]. This plant species has been used as an ethnomedicine and is known to treat ailments such as swelling, relapse, and fever [12].…”

Section: Introductionmentioning

confidence: 99%

Neonauclea formicaria (Rubiaceae) Leaf Extract Inhibits Vascularization in the Chorioallantoic Membrane of Duck Embryos

Vergara

Demetillo

Ombat

et al. 2021

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Plants are reservoirs of bioactive compounds with the potential for pharmaceutical use. In this study, the secondary metabolites of Neonauclea formicaria leaf crude ethanolic extract were determined using phytochemical screening. The plant's leaf extract was then used to test its angiogenesis activity using the chorioallantoic membrane (CAM) assay. Four concentrations of the extract were prepared—0.1 mg/L, 1.0 mg/L, 10.0 mg/L, and 100.0 mg/L and were topically applied on the CAM. Phytochemical screening revealed that N. formicaria leaves contain heavy amounts of flavonoids and tannins, while alkaloids, saponins, and steroids were present in trace amounts. The crude ethanolic extract was anti-angiogenic, as indicated by the significant decrease of vascular density at higher concentrations (P<0.05). The 100 mg/L extract concentration showed the highest vascular inhibition (50.93%) among the other concentrations, suggesting its angiopreventive potential (P<0.05). Further investigation on the embryo's gross morphometry revealed no significant effects in the weight, crown-rump length, head-beak length, forelimb length, and hind limb length. Also, these indices were not associated with the angiogenesis activity on the CAM. Further studies exploring the specific metabolites of the different plant parts of N. formicaria and the plant's angiopreventive potential are recommended.

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“…The genus Neonauclea (Rubiaceae) includes 69 species of diverse trees and shrubs [1]. The plants of this genus are mainly distributed in the Malesian region, extending from India to Vietnam and from Southeast Asia to the northern limits of Australia [2].…”

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confidence: 99%

Four New Iridoid Metabolites Have Been Isolated from the Stems of Neonauclea reticulata (Havil.) Merr. with Anti-Inflammatory Activities on LPS-Induced RAW264.7 Cells

et al. 2019

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One new iridoid, namely neonanin C (1) one monocyclic iridoid ring-opened derivative namely neonanin D (2), two new bis-iridoid derivatives namely reticunin A (3) and reticunin B (4) with sixteen known compounds (5–20) were isolated from the stems of Neonauclea reticulata (Havil.) Merr. These new structures were determined by the detailed analysis of spectroscopic data and comparison with the data of known analogues. Compounds 1–20 were evaluated for inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages cell line. The results showed that all compounds exhibited no obvious cytotoxicity compared to the control group and five compounds including isoboonein (7), syringaresinol (10), (+)-medioresinol (12), protocatechuic acid (14) and trans-caffeic acid (15) exhibited inhibitory activities with IC50 values at 86.27 ± 3.45; 9.18 ± 1.90; 76.18 ± 2.42; 72.91 ± 4.97 and 95.16 ± 1.20 µg/mL, respectively.

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Neonauclea viridiflora (Rubiaceae), a New Species of Naucleeae from Eastern Samar, with Notes on Myrmecophytic Species in the Philippines

Cited by 7 publications

References 8 publications

Inventory of Rubiaceae species in Mt. Pao Range, Ilocos Norte, Northwestern Luzon, Philippines

Inventory of Rubiaceae species in Mt. Pao Range, Ilocos Norte, Northwestern Luzon, Philippines

<i>Neonauclea </i><i>formicaria</i><i> </i>(Rubiaceae) Leaf Extract Inhibits Vascularization in the Chorioallantoic Membrane of Duck Embryos<i></i>

Four New Iridoid Metabolites Have Been Isolated from the Stems of Neonauclea reticulata (Havil.) Merr. with Anti-Inflammatory Activities on LPS-Induced RAW264.7 Cells

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