Toppur Seethapathy Sadasivan
Toppur Seethapathy Sadasivan, Indian mycologist and plant pathologist (Madras 22 May 1913 – Chennai 18 August 2001) ACHIEVEMENTS Developed concepts such as competitive saprophytic ability and rhizosphere effect Elucidated the rhizosphere effect in which root exudates promotes the growing and survival of specific pathogens First demonstrated the fungal toxin fusaric acid in vivo leading to name it vivotoxin First to demonstrate fusaric acid in wilting cotton plants First demonstrated that the toxins of the blast fungus induced “green islands” in rice leaf tissues Put forward definitive evidence of ionic imbalance in wilted plants in the form of excessive excretion and enhanced transpiration resulting in loss of potassium and accumulation of divalent cations HONORS Sadasivania Subramanian 1957 (Fungi) LINKS WWW.ias.ac.in/currsci/oct102001/845.pdf
Tomas Suero
Tomás Suero, Argentine geologist (La Plata 10 October 1915 – La Plata 21 August 1963) SOME BIBLIOGRAPHY Compilación geológica de las Sierras Australes de la prov. de Bs. Aires. Lab. Ens. Mat. Invest. Tecnologicas (LEMIT) 1963 Paleogeografia del Paleozoico Superior en la Patagonia (Rep. Argentina). Rev. Asoc. Geol. Arg. 16(1-2), 1961 With P.C. Roque, C. de Ferrariis, A. Mingramm, E.O. Rolleri & L.B. Simonato. Cuencas sedimentarias de la Argentina. Bol. Inf. Petrol. 320, 1960 Datos geológicos sobre el Paleozoico Superior de la zona de Nueva Lubecka y alrededores (Chubut Extraandino). Rev. Mus. La Plata (NS) Geol. 5(30), 1958 Geologia de la Sierra de Pillahuinco (Sierras Australes de la Prov. de Bs. Aires), partidos de Cnel. Pringles y Cnel. Suárez. Lab. Ensayo Mat. Inv. Tecnol. (LEMIT) 2(74), 1957 Reseña general sobre los relieves graníticos de la Patagonia (1955) With P.C. Roque. Descubrimiento del Paleozoico Superior al oeste de Bahía Laura (Terr. Nac. de Santa Cruz) y su importância paleogeografica. Notas Mus. La Plata, Geol. 18(68):157-68, 1955 Las sucesiones sedimentarias suprapaleozoicas de la zona extraandina del Chubut. Rev. Asoc. Geol. Arg. 8(1):37-53, 1953 Descripción geológica de la hoja 36c, Cerro Lotena (Neuquén). Bol. Dir.Nac. Minería 76, 1951 Descubrimiento del Paleozoico Superior en la zona extra-andina del Chubut. Bol. Inf. Petrol. 287:31-48, 1948 Sobre la tectónica del Jurásico Superior y del Supracretácico en los alrededores del Cerro Lotena (Neuquén). Thesis, Museo de La Plata (1943) Excursión didáctica a los territórios patagônicos de Neuquén y Río Negro. Rev. Museo La Plata (NS) p.92-113, 1939 HONORS (Fossil) Sueria Menendez 1965 (Plantae) Sueroacrocrinus Hlebszevitch 2004 (Echinodermata) Sueroceras Riccardi & Sabattini 1975 (Mollusca) Sueroa Gonzalez 2006 (Molusca)
Tiruvenkata Rajendra Seshadri
Tiruvenkata Rajendra Seshadri, Indian phytochemist (Kulitalai, Tiruchirapalli, Tamil Nadu 03 February 1900 – 27 September 1975) ACHIEVEMENTS Published more than 1000 papers Discovered many chemicals from plants Elucidated structures of many compounds such as gossytrin and related pigments, pedicinin, pedicellic acid and related compounds, pedaliine, mangiferine, dalbergine, latifoline, ferreirine and homoferreirine, pongamol, karanjine, auranetine, prudomestine, nepritine, cupressulflavone, thelephoric acid, virensic acid, tingenone, enhydrin, santaline, carajurin, alpha terthienyl methanol and others Obtained total synthesis of gossypetine, quectagenine, khelline, pterocarpine, rotenoids, cyanomaclurine, pedaletine, darmanacanthal and related anthraquinones Between methods developed the technique of O-methylation of phenols using dimethylsulphate, selective demethylation, C-methylation, C-prenylation, the nuclear oxidation, involving removal of a hydroxyl group (1940), nuclear reduction and Elbs-Seshadri oxidation (1947) Developed many reagents and synthetic procedures Developed a way to synthesize flavonoid pedalitin Identified neoflavonoids and suggested the correct biogenetic pathway for them A new group of polyphenols of woods, neoflavonoids. Proc. Annu Session Ceylon Assoc. Adv. Science 22:193-201, 1966 With A.C. Jain & K.R. Sreenivasan. A new synthesis of flavonols of the quercetagenine series With R. Padmasani. New reagents for the synthesis of depsides. Tetrahedron 21:3531-6, 1965. With N, Narasimachari. A new effect of hydrogen bond formation. Proc. Indian Acad. Sciences 27 A: 223-239, 1948. With A.K. Ganguly & P. Subramanian. A convenient method of preparation of cyanidin chloride from (+) catechin and (-) epicatechin. Proc. Indian Acad. Of Sciences 46:25, 1957. Contributed significantly to knowledge of the chemistry of tropical lichens Chemistry Nobel Prize nominee (1966) http://www.ias.ac.in/resonance/Feb2004/pdf/Feb2004ArticleInaBox.pdf
Thawatchai Santisuk
Thawatchai Santisuk, Thai botanist and plant chemist (1944 – DESCRIBED PLANTAE SPECIES Dolichandrone columnaris 1985 (Bignoniaceae) Acer chiangdaoense 1992 (Aceraceae) Wrightia sirikitiae 2001 with Middleton (Apocynaceae) CHEMISTRY Isolated at least 52 new bioactive compounds from plants With Monroe E. Wall & Mansukh C. Wani described calycopterones, a new class of biflavonoids (1994) HONORS Santisukia Brummitt 1992 (Bignoniaceae) Thawatchaia Kato, Koi & Kita 2004 (Podostemaceae)
Teresa Maria Sanchez
Teresa Maria Sanchez, Argentine paleontologist (Pehuajó, Buenos Aires Province 25 January 1945 – 2011) Married to paleontologist Juan Luis Benedetto DESCRIBED FOSSIL MOLLUSCA GENERA Australonucula 1989 Catamarcaia 1993 with Babin Cienagomya 2005 Concavoleda 1999 Costaledopsis 1990 Cuyopsis 1999 Devonodeceptrix 1995 Emiliania 1999 (in honor to her father Emiliano Sanchez) Eoredonia 2008 Famatinadonta 2001 Hemiconcavodonta 1999 Intihuarella 2003 Konduria 2007 Lipanella 2005 Lossella 2006 Natasia 1995 Notonychia 2001 Poladonta 2003 Pseudoleda 1995 Pseudoredonia 2007 Pteripecten 1984 Pucamya 2007 Suria 1997 Talacastella 1986 Trigonoconcha 1999 Ucumaris 2003 Ucumaropsis 2005 Villicumia 1999 Zaplaella 2003 Others (Fossil) Genus Archaeopycnodon 1980 with Benedetto (Pisces) Species Archaeopycnodon riveroi 1980 with Benedetto (Pisces) Coelodus tonconensis 1972 with Benedetto (Pisces) Archaeophiomusium andinum 1983 (Echinodermata)
Terence Macleane Salter
Terence Macleane Salter, English-born South African amateur botanist and botanical collector (Cheltenham, Gloucestershire, England 05 February 1883 – Cape Town 30 March 1969) Described 136 new plant species HONORS Saltera Bullock 1958 (Penaeaceae)