scholarly journals Biogeographic Patterns of Ectomycorrhizal Fungal Communities Associated With Castanopsis sieboldii Across the Japanese Archipelago

2019 ◽  
Vol 10 ◽  
Author(s):  
Shunsuke Matsuoka ◽  
Takaya Iwasaki ◽  
Yoriko Sugiyama ◽  
Eri Kawaguchi ◽  
Hideyuki Doi ◽  
...  
2019 ◽  
Author(s):  
Shunsuke Matsuoka ◽  
Takaya Iwasaki ◽  
Yoriko Sugiyama ◽  
Eri Kawaguchi ◽  
Hideyuki Doi ◽  
...  

AbstractBiogeographic patterns in ectomycorrhizal (ECM) fungal communities and their drivers have been elucidated, including effects of host tree species and abiotic (climatic and edaphic) conditions. At these geographic scales, genotypic diversity and composition of single host tree species change with spatial and environmental gradients, reflecting their historical dispersal events. However, whether the host genotypes can be associated with the biogeographic patterns of ECM communities remains unclear. We investigated the biogeographic pattern of ECM fungal community associated with the single host species Castanopsis sieboldii (Fagaceae), whose genotypic diversity and composition across the Japanese archipelago has already been evaluated, and we quantified the effect of host genotypes on the biogeographic pattern. Richness and community composition of ECM fungi changed with latitude and longitude; these biogeographic changes of ECM community were significantly explained by host genotypic variables. Quantitative analyses showed a higher relative explanatory power of climatic and spatial variables than that of host genotypic variables for the biogeographic patterns in the ECM community. Our results suggest the importance of historical events of host dispersal in determining the biogeographic patterns of the ECM fungal community, while their explanation power was lower than that for climatic filtering and/or fungal dispersal.


Impact ◽  
2020 ◽  
Vol 2020 (7) ◽  
pp. 56-58
Author(s):  
Naruya Saitou

The ebb and flow of human migration across the planet can nowadays be probed with advanced archaeology, linguistics, anthropology and genomics. Together, these can provide a convincing picture of the various divergences and convergences of different human populations across vast areas. It is now possible to better understand how, why and where a particular group or society arose. Professor Naruya Saitou of the Population Genetics Laboratory at the National Institute of Genetics in Mishima has dedicated his career to the synthesis of these disciplines. The current focus of his research is on understanding the origins and formation of the Yaponesian people. This broad term was coined by writer Toshio Shimao in 1960s to encompass the diverse peoples of the Japanese Archipelago over its many thousands of years of inhabitation. Saitou's research is helping to uncover Japan's ancient past.


2005 ◽  
Vol 50 (3) ◽  
pp. 309-322 ◽  
Author(s):  
Dai Fukui ◽  
Kishio Maeda ◽  
David A. Hill ◽  
Sumiko Matsumura ◽  
Naoki Agetsuma

2010 ◽  
Vol 23 (2) ◽  
pp. 94 ◽  
Author(s):  
Judita Lihová ◽  
Hiroshi Kudoh ◽  
Karol Marhold

Polyploidy is an important evolutionary mechanism and speciation mode in plants; however, delimitation of species boundaries in polyploid complexes is often a difficult task. In the present paper, we explore morphological variation in a group of East Asian Cardamine polyploids that have long been shrouded in taxonomic and nomenclatural confusion. We relate the present morphometric data of 41 sampled populations with recently published ploidy-level data, and propose a revised taxonomic treatment, including the designation of several lectotypes. The following species are recognised in Japan: C. schinziana O.E.Schulz (2n = 6x, 8x), C. torrentis Nakai (2n = 8x), C. valida (Takeda) Nakai (2n = 4x) and C. yezoensis Maxim. (2n = 6x−12x). C. amariformis Nakai (2n = 4x) from Korea is also discussed, although it may be conspecific with C. valida, pending further studies. Distribution of these taxa in the Japanese Archipelago is characterised, including comments on their occurrence outside of Japan.


Author(s):  
Hitomi Hongo

Zooarchaeological and molecular biological studies indicate that all domestic animals found in Japan were introduced and local domestication of wild boar and wolf is unlikely. Timing of introduction and husbandry practice for dog, pig, horse, cattle, and chicken are discussed. These main domestic species were introduced from the Chinese continent in prehistoric times, probably via the Korean peninsula. Meat of domestic animals and dairy products were not a major part of the diet until the twentieth century ad, partly because of the Buddhist prohibition of the consumption of animal meat. Zooarchaeological data from the Yayoi and Kofun period sites as well as the historical era have been gradually accumulating, helping the interpretation of textual records as well as supplementing them.


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