scholarly journals Arbuscular Mycorrhizal and Dark Septate Endophyte Fungal Association in Cassava (Manihot esculenta Crantz) Varieties, Southern India

2019 ◽  
Vol 11 (1) ◽  
pp. 154-166
Author(s):  
Raji MUTHURAJA ◽  
Thangavelu MUTHUKUMAR

The study examined the root characteristics, type of arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal associations and their extent of colonization in 13 widely cultivated cassava (Manihot esculenta Crantz) varieties in southern India. Root and associated soil samples of each cassava variety were collected from Salem and Kolli Hills of the Eastern Ghats in south India. In addition, we also investigated the relationship between the extent of colonization of AM, DSE fungal and AM fungal spore communities and soil characteristics for each cassava variety. Roots of all the cassava varieties were colonized by AM fungi and 12 varieties had co-colonization of DSE fungi. The AM morphology in all the cassava varieties was of an intermediate type with intercellular and intracellular linear hyphae and arbusculate coils. In addition, we found high AM colonization rates (73-89%) but only moderate rates by DSE (22-68%) fungi. We also found 17 AM fungal spore morphotypes and their abundance varied significantly among cassava varieties. In addition, different physicochemical properties of soils may possibly increase AMF diversity, while different varieties of cassava are commonly associated with differing levels of AM and DSE fungi colonization with soil factors potentially influencing the symbiosis.

2014 ◽  
Vol 37 (4) ◽  
pp. 561-581 ◽  
Author(s):  
Thangavelu Muthukumar ◽  
Ganesan Sathiyaraj ◽  
Perumalsamy Priyadharsini ◽  
Eswaranpillai Uma ◽  
Kullaiyan Sathiyadash

2014 ◽  
Vol 104 (2) ◽  
pp. 67-102 ◽  
Author(s):  
Raji Muthuraja ◽  
Thangavelu Muthukumar ◽  
Kullaiyan Sathiyadash ◽  
Eswaranpillai Uma ◽  
Perumalsamy Priyadharsini

2021 ◽  
Vol 66 (3) ◽  
pp. 170-179
Author(s):  
Sengsoulichan Dethvongsa ◽  
Vu Nguyen Anh ◽  
Van Tran Khanh

RAPD (Randomly Amplified Polymorphic DNA) is an indicator for high and stable polymorphism, widely used in the study of the diversity of cassava. In this paper, the results of using 20 polymorphic primers OPK combined with the establishment of the phylogenetic tree to analyze the genetic diversity of 26 cassava varieties with different responses to waterlogging conditions by using the RAPD-PCR technique were presented. The purpose of this experiment was to show the genetic relevance of the studied cassava varieties. The results showed that the flood tolerance of cassava was not related to the polymorphism and branching characteristics of the stem. This information may be use as a basis for selecting flood-tolerant cassava varieties for cassava production, as well as the basis for selecting genetically different parents for breeding.


2016 ◽  
Vol 10 (1) ◽  
pp. 63-70
Author(s):  
Palupi Puspitorini ◽  
Dyah Pitaloka ◽  
Tri Kurniastuti

This study aims to find out the results of cassava tuber crop UJ5 variety at different harvest ages. Research direction is that cassava varieties have been planted throughout Indonesia as the best producer of cassava varieties. High levels of starch and high HCN content makes this variety was selected by the factory - tapioca factory in Indonesia. Research design used randomized block design with 7 treatments of harvesting (UP) were repeated 3 times. UP6 (harvesting 6 MAP), UP7 (harvesting 7 MAP), UP8 (harvesting 8 MAP), UP9 (harvesting 9 MAP), UP10 (harvesting 10 MAP), UP11 (harvesting 11 MAP), UP12 ( harvesting 12 MAP). The research variables are the fresh weight of tuber, tuber starch content (%), the weight of biomass, harvest index, number of tubers per plant. The results showed that the best harvesting time is UP9 the results did not differ with UP10, UP11 and UP12


2019 ◽  
Vol 6 (1) ◽  
pp. 63-70
Author(s):  
Kripamoy Chakraborty ◽  
Subam Banik ◽  
Atithi Debnath ◽  
Aparajita Roy Das ◽  
Ajay Krishna Saha ◽  
...  

The present study was aimed to study monthly colonization of arbuscular mycorrhizal (AM) and dark septate endophyte (DSE) fungal associations in rice. The presence of mycorrhizal structures in the roots confirms the colonization by AM fungi. The pattern of hyphae and arbuscules denotes Arum type of AM fungal morphology. The presence of dark coloured septate hyphae running frequently on the epidermal layer and in root cortex and the occurrence of microsclerotia marks the colonization by DSE fungi. The co-occurrence of both AM and DSE fungi ensure dual colonization by two distinct fungal groups. There was significant increase in arbuscules, vesicles and hyphal percentages from first to third month in both the samples collected from two sites. In the third month, AM colonization significantly higher in both the sites. DSE colonization percentages do not differ significantly in first to third month. A total of nine AM fungal species were recovered from two sites. This study is an effort to make aware the local farmers about the usefulness of these native AM mycobiota which can be a preferable choice over chemical fertilizers leading to ecofriendly organic farming.


Rhizosphere ◽  
2019 ◽  
Vol 10 ◽  
pp. 100147 ◽  
Author(s):  
Papa Saliou Sarr ◽  
Akifumi Sugiyama ◽  
Aime Didier Boyogueno Begoude ◽  
Kazufumi Yazaki ◽  
Shigeru Araki ◽  
...  

Symbiosis ◽  
2010 ◽  
Vol 52 (1) ◽  
pp. 21-32 ◽  
Author(s):  
Kullaiyan Sathiyadash ◽  
Thangavelu Muthukumar ◽  
Eswaranpillai Uma

Sign in / Sign up

Export Citation Format

Share Document