Contextualizing Indian Myths : Post-colonial Identity Formation in the Selected Post-Independence Novels of R. K. Narayan

Cultural Formation Studies（1

Colonial Birth, Nationalist Growth : Influence of the Colonial Rule and Education System on the Novels of India and Bangladesh

ポストコロニアル・フォーメーションズ(13

Transcultural Translation Experience : On Translating Yasunari Kawabata’s Snow Country into Bengali

Cultural Formation Studies (5

Discursive Formation of National Identity : The Legacy of the Bauls of Bengal and Fakir Lalon Shah

Cultural Formation Studies（2

The Politics of Representations : 'Self-making' and 'Othering’ in Rudyard Kipling and R. K. Narayan

Cultural Formation Studies (6

Phylogenetic Position of the Western Bangladesh Populations of Weaver Ant, Oecophylla smaragdina (Fabricius) (Hymenoptera, Formicidae)

Weaver ant, Oecophylla smaragdina is distributed from India through SE Asia to North Australia including many tropical western pacific Islands. A recent phylogenetic study of O. smaragdina revealed the central Bangladesh population as SE Asian mainland clade despite of its geographical proximity to India. However, the sample analyzed was limited and the geographical border between the two groups has not been presented. In this study, several samples collected from western parts of Bangladesh have been used to examine the phylogenetic position. A total of 20 O. smaragdina colonies were sampled from 12 Districts during 2013 to 2014. Their haplotype and phylogenetic relationships were determined by analyzing mitochondrial Cytochrome b gene (Cytb) of 606 bp and Cytochrome oxidase subunit I (COI) of 775bp. Bayesian analysis inferred that the western parts of Bangladesh were occupied by Indian type, which is the first record in the country. The present study suggested that, although the Ganges river has no border effect, both Indian type and SE Asian types occur in Bangladesh.

Effect of external iron and arsenic species on chelant-enhanced iron bioavailability and arsenic uptake in rice (Oryza sativa L.)

This study was conducted to investigate the effect of external iron status and arsenic species on chelant-enhanced iron bioavailability and arsenic uptake. Rice seedlings (Oryza sativa L.) were used as model plant, and were grown in artificially contaminated sandy soils irrigated with Murashige and Skoog (MS) culture solution. Arsenate uptake in roots and shoots of rice seedlings were affected significantly (p>0.05) while dimethylarsinic acid (DMAA) was not by the additional iron and chelating ligand treatments. Regardless of iron concentrations in the soil solution, HIDS increased arsenic uptake for roots more than EDTA and EDDS. Chelating ligands and arsenic species also influenced iron uptake in rice roots. Irrespective of arsenic species, HIDS was found to be more effective in the increase of iron bioavailability and uptake in rice roots compared to other chelants. There was a significant positive correlation (r=0.78, p<0.05) between arsenate and iron concentrations in the roots of rice seedlings grown with or without additional iron indicating that arsenate inhibit iron uptake. In contrast, there was no correlation between iron and DMAA uptake in roots. Poor correlation between iron and arsenic in shoots indicated that iron uptake in shoots was neither affected by additional iron nor by arsenic species. Compared to the control, chelating ligands increased iron uptake in shoots of rice seedlings significantly (p<0.05). Regardless of additional iron and arsenic species, iron uptake in rice shoots did not differed among EDTA, EDDS, and HIDS treatments. © 2011 Elsevier Ltd

Molecular responses of phytoplankton to iron limitation

13301甲第3955号博士（学術）金沢大学博士論文本文Ful

Molecular responses of phytoplankton to iron limitation

13301甲第3955号博士（学術）金沢大学博士論文要旨Abstract 要約Outlin

Phytotoxicity of arsenate and salinity on early seedling growth of rice (oryza sativa l.): A threat to sustainable rice cultivation in South and South-East Asia

Arsenic (As) contamination is an important environmental consequence in some parts of salinity-affected South (S) and South-East (SE) Asia. In this study, we investigated the individual and combined phytotoxicity of arsenic (As) [arsenate; As(V)] and salinity (NaCl) on early seedling growth (ESG) of saline-tolerant and non-tolerant rice varieties. Germination percentage (GP), germination speed (GS) and vigor index (VI) of both saline-tolerant and non-tolerant rice varieties decreased significantly (p[0.01) with increasing As(V) and NaCl concentrations. The highest GP(91%) was observed for saline non-tolerant BRRI dhan28 and BRRI dhan49, while the lowest (62%) was for salinetolerant BRRI dhan47. The ESG parameters, such as weights and relative lengths of plumule and radicle, also decreased significantly (p\0.01) with increasing As(V) and NaCl concentrations. Relative radicle length was more affected than plumule length by As(V) and NaCl. Although VI of saline-tolerant and non-tolerant rice seedlings showed significant variation (p\0.05), weights and lengths of plumule and radicle of different rice varieties did not show significant variation for As(V) and NaCl treatments. Results reveal that the combined phytotoxicity of As(V) and NaCl on rice seed germination and ESG are greater than their individual toxicities, and some saline-tolerant rice varieties are more resistant to the combined phytotoxicity of As(V) and NaCl than the saline non-tolerant varieties. © Springer Science+Business Media, LLC 2012