Effects of dietary astaxanthin and vitamin E and their interactions on the growth performance,pigmentation, digestive enzyme activity of kuruma shrimp (Marsupenaeus japonicus)     

Weilong Wang  Manabu Ishikawa  Shunsuke Koshio  Saichiro Yokoyama  Mahmoud A. O. Dawood  Md. Sakhawat Hossain  Amina S. Moss 《Aquaculture Research》2019,50(4):1186-1197

A 56‐day feeding trial was done to investigate the interactive effects of astaxanthin (Ax) and vitamin E (α‐Toc) on the performance of kuruma shrimp (Marsupenaeus japonicus). A 2 × 3 factorial experiment was conducted with six experimental diets containing two levels of Ax (0 and 0.6 g/kg diet [Ax₀ and Ax_0.6]) and three levels of α‐Toc (0, 0.2 and 1 g/kg diet [α‐Toc₀, α‐Toc_0.2 and α‐Toc₁]). The results indicated that growth performance was significantly (p < 0.05) increased in shrimp fed with the Ax_0.6 × α‐Toc_0.2 diet. Interactive effects between Ax and α‐Toc on the growth parameters were observed. Furthermore, pigmentation performance was significantly (p < 0.05) better in the Ax_0.6 groups. Interaction between Ax and α‐Toc was also found in the Ax content of shrimp body parts. Interestingly, dietary α‐Toc helped to reduce the Ax consumption rate, promote the absorption and increase the deposition of Ax in the muscle. Shrimps from the Ax_0.6 groups showed significantly (p < 0.05) improved hepatopancreatic digestive enzyme activities compared with those of the Ax₀ groups. Although no interactive (p > 0.05) effects were found between dietary α‐Toc and Ax on total haemocyte count and tolerance against freshwater, dietary Ax and α‐Toc supplementation showed better performance on these two parameters. It was concluded that dietary Ax and α‐Toc functioned synergistically, and the shrimp fed with the diet containing 0.6 g Ax/kg diet Ax and 0.2 g α‐Toc/kg diet showed improved growth and pigmentation performance compared with the other groups in the current study.  相似文献   

Phylogenetic analysis of lymphocystis disease virus from tropical ornamental fish species based on a major capsid protein gene   总被引：1，自引：0，他引：1  

Hossain M  Song JY  Kitamura SI  Jung SJ  Oh MJ 《Journal of fish diseases》2008,31(6):473-479

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Hydathode function and changes in contents of elements in eddo exposed to zinc in hydroponic solution     

Md. Babul Hossain  Ayumi Sawada  Kaori Noda 《Plant Production Science》2017,20(4):423-433

To explore the zinc stress response in eddo, plants were grown for 15 d in hydroponic solutions containing 1 (control), 200, and 1000 μM zinc, and the hydathode function and changes in the contents of various elements in these plants were investigated. Under 1000 μM zinc, the dry weights of leaf blades and roots are decreased by 17 and 42%, respectively. The zinc contents in leaf blades, petioles, corms, and roots increased with increasing zinc levels in the solution. The zinc content in roots was 6.57 mg g^?1 dry weight, which was 2.8–4.3 times higher than in other plant parts under 1000 μM zinc. These results demonstrate that the severe root damage occurring under 1000 μM zinc is due to higher zinc content in the roots. Under zinc stress, the contents of iron and copper in roots increased, but the contents of magnesium and calcium in petioles, corms, and roots, iron in leaf blades and corms, and manganese in petioles and corms decreased. In the guttation fluid, the concentrations of zinc, magnesium, and potassium increased, while the iron concentration decreased under 1000 μM zinc. Thus, elemental changes occurred in the guttation fluid as well as in different plant parts in eddo. In the 200 and 1000 μM zinc treatments, the amount of zinc eliminated via guttation was 2.8 and 8.5 times higher, respectively, than in the control. The results indicate that guttation partly contributes to the excretion of excess zinc under zinc stress conditions.  相似文献   

A review on South Asian wheat blast: The present status and future perspective     

Nabila Yesmin  Farhana Jenny  Hasan M. Abdullah  Motaher M. Hossain  Md A. Kader  Peter S. Solomon  Md A. H. B. Bhuiyan 《Plant pathology》2020,69(9):1618-1629

The outbreak of wheat blast (Pyricularia oryzae, syn. Magnaporthe oryzae) in Bangladesh and India in recent times is a cause of grave concern for future wheat production in South Asian countries. In this review, we focus on the origin and pathology of P. oryzae and its current status and impact on trade of wheat in South Asia. We also consider future directions for efficient detection, monitoring, forecasting, and managing this destructive disease. Proper detection and monitoring are essential for imposing disease management strategies. Cutting-edge tools such as geospatial modelling and remote sensing technologies based on field observation will be pivotal to efficiently contain and manage the disease. Strong quarantine regulations too are critical in preventing the pathogen movement and are also discussed within. Complementary approaches, such as the induction of systemic resistance by applying plant growth-promoting rhizobacteria or probiotic bacteria, are also considered here. This review provides a comprehensive summary on the status of wheat blast in South-East Asia and will provide an important resource for wheat blast research in the affected areas.  相似文献   

Evaluation of elite bread wheat lines for resistance to blast disease in Bangladesh     

Roy  Krishna Kanta  Reza  Md Mostofa Ali  Muzahid-E-Rahman  Md  Anwar  Md Babul  Kishowar-E-Mustarin  Kabir  Muhammad Rezaul  Malaker  Paritosh Kumar  Barma  Naresh Chandra Deb  Hossain  Md Israil  He  Xinyao  Chawade  Aakash  Singh  Pawan Kumar 《Euphytica》2021,217(7):1-23

Euphytica - Genetic approaches often lead to the most cost-effective and efficient means to improve crops, especially those grown widely. But for most crops, cotton included, genetic improvement...  相似文献   

Changes in Cell Wall Polysaccharides and Hydroxycinnamates in Wheat Roots by Aluminum Stress at Higher Calcium Supply     

A. K. M. Z. Hossain  M. A. Hossain  M. A. Asgar  T. Tosaki  H. Koyama  T. Hara 《Journal of plant nutrition》2013,36(4):601-613

The present study was conducted to investigate the cell-wall polysaccharides and hydroxycinnamates in wheat plants (Triticum aestivum L.) under aluminum (Al) stress at a higher level of calcium (Ca) supply. Seedlings were grown in nutrient solution for 7 d and then subjected to treatment solutions containing Al (0 or 100 μM) and Ca (0 or 2500 μM) in a 500 μM CaCl ₂ solution at pH 4.5 for 8 d. Calcium treatment (2500 μM) improved root growth significantly under Al-stress conditions. The contents of pectin and hemicellulose in roots were increased under Al-stress conditions, and this increase was conspicuous in the hemicellulosic fraction. The increase in the hemicellulose was attributed to increases in arabinose, xylose, and glucose in neutral sugars. High Ca treatment decreased these contents in Al-stressed cell walls. Aluminum treatment increased the content of ferulic acid, whereas Ca treatment with Al reduced the content. These results suggest that Al may modify the mechanical properties of cell-wall polysaccharides by enhancing the synthesis of arabinoxylan, β-glucan, and ferulic acid in the cell wall. High Ca treatment may maintain the normal synthesis of these materials even under Al-stress conditions.  相似文献   

A Study of Indoor Environment Indicators in Popular Green Building Assessment Systems     

Yang Xincheng  Liu Meng  Hossain Uzzal 《保鲜与加工》2013,(Z1):174-176

A comparison research is launched for the Indoor Environment Quality indicators of the popular Green Building Assessment systems and China Evaluation standard for green building, including the IEQ indicators’ contents, weightings, and the scoring requirements for different green building ratings. By comparison, it was found that the indoor environment is mainly composed by IAQ, version environment, thermal environment and the acoustic environment, and the IAQ is the most important component in these systems. Although there is no weighting system or scoring system in China Green building assessment system, it is characterized by the relatively numerous prerequisites and the achieved indicators requirement for different ratings. Besides, the indicators paid with intensive attention in these systems are found.  相似文献   

Genome duplication improves rice root resistance to salt stress   总被引：2，自引：0，他引：2  

Yi Tu  Aiming Jiang  Lu Gan  Mokter Hossain  Jinming Zhang  Bo Peng  Yuguo Xiong  Zhaojian Song  Detian Cai  Weifeng Xu  Jianhua Zhang  Yuchi He 《Rice》2014,7(1):15

Background

Salinity is a stressful environmental factor that limits the productivity of crop plants, and roots form the major interface between plants and various abiotic stresses. Rice is a salt-sensitive crop and its polyploid shows advantages in terms of stress resistance. The objective of this study was to investigate the effects of genome duplication on rice root resistance to salt stress.

Results

Both diploid rice (HN2026-2x and Nipponbare-2x) and their corresponding tetraploid rice (HN2026-4x and Nipponbare-4x) were cultured in half-strength Murashige and Skoog medium with 150 mM NaCl for 3 and 5 days. Accumulations of proline, soluble sugar, malondialdehyde (MDA), Na⁺ content, H⁺ (proton) flux at root tips, and the microstructure and ultrastructure in rice roots were examined. We found that tetraploid rice showed less root growth inhibition, accumulated higher proline content and lower MDA content, and exhibited a higher frequency of normal epidermal cells than diploid rice. In addition, a protective gap appeared between the cortex and pericycle cells in tetraploid rice. Next, ultrastructural analysis showed that genome duplication improved membrane, organelle, and nuclei stability. Furthermore, Na⁺ in tetraploid rice roots significantly decreased while root tip H⁺ efflux in tetraploid rice significantly increased.

Conclusions

Our results suggest that genome duplication improves root resistance to salt stress, and that enhanced proton transport to the root surface may play a role in reducing Na⁺ entrance into the roots.  相似文献   

Mapping of Quantitative Trait Loci Associated with Reproductive‐Stage Salt Tolerance in Rice          下载免费PDF全文

H. Hossain  M. A. Rahman  M. S. Alam  R. K. Singh 《Journal of Agronomy and Crop Science》2015,201(1):17-31

Salinity tolerance in rice varies with the state of growth, with the seedling and reproductive stages being the most sensitive. However, association between tolerances at the two stages is poor, suggesting that they are regulated by different processes and genes. Tolerance at the reproductive stage is the most crucial as it determines grain yield. An F₂ mapping population was developed from two rice genotypes contrasting in tolerance: Cheriviruppu and Pusa Basmati 1 (PB1). Cheriviruppu is highly tolerant at the reproductive stage, while PB1 is highly sensitive at both seedling and reproductive stages. One hundred and thirty‐one microsatellite markers polymorphic between the parents were used to construct a linkage map of 1458.5 cM (Kosambi), with a mean intermarker distance of 11.1 cM. Sixteen QTLs with LOD values ranging from 3.2 to 22.3 were identified on chromosomes 1, 7, 8 and 10, explaining 4–47 % of the phenotypic variation. The maximum number of QTL clusters for different component traits was colocalized on the long arm of chromosome 1 and chromosome 7. We identified several significant epistatic interactions, including three inter‐QTL interactions, using MapManager. The results suggest that pollen fertility, Na⁺ concentration and Na/K ratio in the flag leaf are the most important mechanisms controlling salt tolerance at the reproductive stage in rice. The study reports the construction of a genetic map for reproductive‐stage salt tolerance in rice and demonstrates its utility for molecular mapping of QTLs controlling salinity tolerance‐related traits, which will be useful in marker‐assisted selection in the future.  相似文献   

Extended holding period and yeast hydrolysate in pre-release diet increase abundance of mature sterile Queensland fruit fly males in the field     

Biswas  Md. Jamil Hossain  Mainali  Bishwo  Inskeep  Jess R.  Gaire  Sushil K.  Cross  Dominic  Stringer  Lloyd D.  Taylor  Phillip W.  Rempoulakis  Polychronis 《Journal of pest science》2022,95(1):291-301

Journal of Pest Science - Queensland fruit fly (Q-fly), Bactrocera tryoni (Froggatt), is a significant pest of horticultural crops in Australia. The sterile insect technique (SIT) is currently...  相似文献