Article
Agronomy
Raveendran Muthurajan, Valarmathi Ramanathan, Abhijeet Bansilal Shillak, Suryawanshi Madhuri Pralhad, Chavan Neha Shankarrao, Hifzur Rahman, Rohit Kambale, Jagadeeshselvam Nallathambi, Sudha Tamilselvan, Parani Madasamy
Summary: Engineering transcription factors (TF) show promise in enhancing abiotic stress tolerance in plants, as demonstrated by the study on genetically modified rice variety ADT 43 in South India. The transgenic lines of ADT 43 exhibited increased tolerance to drought and salinity, along with better growth performance and yield retention.
Review
Plant Sciences
Showkat Ahmad Ganie, Shabir Hussain Wani, Robert Henry, Goetz Hensel
Summary: Recent advancements in understanding salt tolerance mechanisms and the use of new technologies have opened up possibilities for improving rice breeding in saline soils, accelerating the development of high-quality salt-tolerant rice cultivars.
CURRENT OPINION IN PLANT BIOLOGY
(2021)
Article
Plant Sciences
Thao Duc Le, Floran Gathignol, Huong Thi Vu, Khanh Le Nguyen, Linh Hien Tran, Hien Thi Thu Vu, Tu Xuan Dinh, Francoise Lazennec, Xuan Hoi Pham, Anne-Alienor Very, Pascal Gantet, Giang Thi Hoang
Summary: This study explores the mechanisms of rice tolerance to salinity stress, identifying 26 QTLs related to salinity tolerance through a genome-wide association study on 179 Vietnamese rice landraces. Ten of these QTLs were associated with multiple traits, suggesting pleiotropic effects in controlling plant responses to salinity stress.Twenty-one of the identified QTLs colocalized with known QTLs, and the associated genes mainly function in gene regulation, signal transduction, or hormone signaling related to salinity stress tolerance.
Review
Plant Sciences
Adnan Rasheed, Huijie Li, Muhammad Nawaz, Athar Mahmood, Muhammad Umair Hassan, Adnan Noor Shah, Fiaz Hussain, Saira Azmat, Syed Faheem Anjum Gillani, Yasir Majeed, Sameer H. Qari, Ziming Wu
Summary: Improving salinity tolerance in rice can reduce yield losses caused by stress. Conventional breeding methods have limitations in developing salt-tolerant rice genotypes, making it critical to use molecular tools for screening salt-tolerant genes. The latest molecular techniques have shown reliability in incorporating salt tolerance in rice at the molecular level. Large-scale use of these genetic approaches helps identify and edit genes/QTLs associated with salinity tolerance in rice. Molecular breeding tools are also essential for conserving rice genetic diversity.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Tingchang Liu, Liangli Bai, Lifang Huang, Donghai Mao
Summary: This study selected twelve high-yielding rice varieties in East Asia and screened low potassium tolerant and low potassium sensitive varieties by measuring their plant height, fresh sheath weight, and fresh blade weight under hydroponic conditions. Based on the relative values of these two varieties at different potassium concentrations, significant differences were found at multiple low potassium concentrations. The potassium content and potassium transport traits in plant tissues were also measured, and significant differences were observed between the two varieties. Therefore, it is believed that this pair of parents with significant differences in potassium transport can be used to locate relevant QTLs with high potassium efficiency to cope with the crisis of soil potassium deficiency in East Asia.
Review
Agronomy
Shuai Tong, Motoyuki Ashikari, Keisuke Nagai, Ole Pedersen
Summary: Considering the intensification of climate change, the urgent development of resilient rice that can endure abiotic stresses is necessary. Wild relatives of rice possess diverse mechanisms to shield themselves from environmental pressures. These wild plants may provide an untapped source of genetic diversity essential for improving abiotic stress tolerance in cultivated rice. However, traditional breeding methods such as backcrossing and transgenesis pose difficulties in transferring resilience traits between plants. On the other hand, genome editing allows for quick de novo domestication to produce rice with high yields from wild relatives, like O. longistaminata, which exhibits tolerance to multiple abiotic stresses and valuable traits for sustainable rice production.
Article
Plant Sciences
Ashutosh Kumar Yadav, Aruna Kumar, Nitasha Grover, Ranjith Kumar Ellur, Haritha Bollinedi, Subbaiyan Gopala Krishnan, Prolay Kumar Bhowmick, Kunnummal Kurungara Vinod, Mariappan Nagarajan, Ashok Kumar Singh
Summary: The study identified 11 rice accessions with high salt tolerance at the seedling stage and discovered 23 marker-trait associations through genome-wide association study (GWAS). These associations were found on multiple rice chromosomes and included both previously reported quantitative trait loci (QTLs) and novel associations. Additionally, several candidate genes associated with salinity tolerance were identified within genomic regions surrounding the novel marker-trait associations.
Article
Plant Sciences
Xiaoliang Wang, Jinquan Li, Jian Sun, Shuang Gu, Jingbo Wang, Chang Su, Yueting Li, Dianrong Ma, Minghui Zhao, Wenfu Chen
Summary: This study evaluated the salt tolerance of rice under salt stress and normal conditions, and identified QTLs and candidate genes associated with salt tolerance through genome-wide association study. These findings provide useful information for marker assisted selection for salt tolerance in rice breeding programs.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Xiaoliang Wang, Jinquan Li, Jian Sun, Shuang Gu, Jingbo Wang, Chang Su, Yueting Li, Dianrong Ma, Minghui Zhao, Wenfu Chen
Summary: In this study, the salt-related traits of rice under salinity stress were evaluated, and a total of 65 QTLs significantly associated with salt tolerance were identified. Four candidate genes related to salt tolerance were determined through haplotype analysis, qRT-PCR analysis, and sequence alignment.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Lupakisyo Mwakyusa, Maria Cristina Heredia, Newton Lwiyiso Kilasi, Richard R. Madege, Max Herzog, Shalabh Dixit
Summary: The rising cost of transplanting rice has made direct seeding an affordable alternative for rice establishment in Africa. However, direct seeding faces challenges from flooding, which limits germination. This study aims to contribute to resilience breeding by screening potential rice donors with anaerobic stress tolerance.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Mingxing Zhang, Ranran Zhao, Haitao Wang, Shule Ren, Liyuan Shi, Shuangzhan Huang, Zhiqi Wei, Boya Guo, Jiuyan Jin, Yu Zhong, Mojun Chen, Wenzhu Jiang, Tao Wu, Xinglin Du
Summary: OsWRKY28 enhances salinity tolerance in rice by directly binding to OsDREB1B promoter and increasing its transcriptional activity. It also negatively regulates abscisic acid mediated seedling establishment in rice.
PLANT CELL REPORTS
(2023)
Article
Marine & Freshwater Biology
Bruce C. Chessman
Summary: Anthropogenic salinisation of inland waters globally has significant impacts on society, economy, and ecology, including changes in biological communities. A new Invertebrate-Based Salinity Index (IBSI) was developed using published data on the occurrence of aquatic invertebrate taxa in relation to salinity. Testing the index with independent data showed a stronger association with salinity compared to prior Australian salinity indices based on macroinvertebrates. IBSI can be applied to both running and standing inland waters in Australia and has the potential to be extended to other countries.
Article
Plant Sciences
Xiang Zhang, Yan Long, Xingxiang Chen, Baolei Zhang, Yafeng Xin, Longying Li, Shuling Cao, Fuhang Liu, Zhigang Wang, Hao Huang, Degui Zhou, Jixing Xia
Summary: This study demonstrates the crucial role of rice OsNAC3 in ABA signal response and salt tolerance. Knockout of OsNAC3 increases sensitivity to salt stress, while overexpression enhances salt tolerance capability. The findings highlight OsNAC3 as a key regulator in enhancing rice's ability to respond to salt stress.
Article
Biochemistry & Molecular Biology
Xiabing Sheng, Zhiyong Ai, Yanning Tan, Yuanyi Hu, Xiayu Guo, Xiaolin Liu, Zhizhong Sun, Dong Yu, Jin Chen, Ning Tang, Meijuan Duan, Dingyang Yuan
Summary: Climate change has led to increased salinity in many areas, particularly in coastal mud flats, which affects rice productivity. This study successfully developed new salt-tolerant rice germplasms through CRISPR/Cas9 gene editing technology combined with heterosis utilization. By developing hybrid rice varieties, a new generation of rice with high salinity tolerance was cultivated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Raj Kumar Gautam, Pankaj Kumar Singh, Krishnan Sakthivel, K. Venkatesan, Shyam S. Rao, M. Srikumar, Joshitha Vijayan, B. Rakesh, Soham Ray, Jameel Akhtar, Bharat Raj Meena, Sapna Langyan, Sharik Ali, S. L. Krishnamurthy
Summary: Bacterial blight is a major disease of rice, and developing rice varieties with resistance genes is an effective solution. In this study, we successfully introgressed four resistance genes into Carri Dhan 5, a popular rice variety, through marker-assisted backcross breeding.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Morio Iijima, Koji Yamane, Yoshihiro Hirooka, Kaede Wada, Yasunobu Okada, Miki Mariyama, Yoshinori Watanabe
PLANT PRODUCTION SCIENCE
(2020)
Article
Agronomy
Koji Yamane, Yoshitsugu Fudano, Nobuyuki Takao, Takatsugu Sugiyama, Yasuhiro Izumi, Hiroyuki Daimon, Hiroyuki Tsuji, Noriyuki Murakami, Morio Iijima
PLANT PRODUCTION SCIENCE
(2020)
Article
Agricultural Economics & Policy
Yoshihiro Hirooka, Tadayoshi Masuda, Yoshinori Watanabe, Yasuhiro Izumi, Hiroyuki Inai, Simon Awala, Morio Iijima
Summary: The study found that introducing a rice-based mixed cropping system can increase crop productivity among local farmers, reduce labor input, and provide high rice yields. Rice had a higher yield performance in ondombe compared to pearl millet and sorghum, even in drought years. Based on yield and household surveys, as well as scenario analysis, this mixed cropping system can compensate for one-fourth of the government's urgent food import budget in drought years.
Article
Agronomy
Morio Iijima, Kaito Yamashita, Yoshihiro Hirooka, Yoshikatsu Ueda, Koji Yamane, Chikashi Kamimura
Summary: Previous research on the effects of ultrafine bubbles (UFB) on plant growth has shown contradictory results. This study aimed to clarify interspecific differences in growth responses among cereal/leguminous species at different UFB concentrations. Results showed that growth responses to UFB varied among different plant species, with rice and soybeans showing higher biomass production at both low and high UFB concentrations, while other crops exhibited promoted growth at only one of the concentrations.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Yoshihiro Hirooka, Simon K. Awala, Kudakwashe Hove, Pamwenafye Nanhapo, Morio Iijima
Summary: This study evaluated the effects of ridge-furrows and fertilizer application on pearl millet yield and growth in seasonal wetlands with different rainfall conditions. The results showed that manure fertilizer led to higher yields in 2018, while mineral fertilizer performed better in 2017. Yield was mainly determined by total dry weight and closely related to panicle density in both years. Fertilizer application, especially based on growth diagnostic, was found important for improving crop production in seasonal wetlands.
Article
Agronomy
Morio Iijima, Yoshihiro Hirooka, Yoshimasa Kawato, Hitoshi Shimamoto, Koji Yamane, Yoshinori Watanabe
Summary: Close mixed-planting is a new method of mixed cropping that allows for greater complementarity between two plant species through their tightly intertwined root systems, facilitating the transfer of oxygen and/or water. In this study, it was found that rice planted as a companion crop to soybeans can alleviate short-term flood stress and enhance soybean growth. The survival rates, photosynthetic rates, and biomass production were higher in the mixed soybean plants compared to single soybean plants.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Morio Iijima, Kaito Yamashita, Yoshihiro Hirooka, Yoshikatsu Ueda, Koji Yamane, Chikashi Kamimura
Summary: This study demonstrates that the application of ultrafine bubbles (UFBs) can promote plant growth under suboptimal conditions and mitigate osmotic stress in soybean seedlings. The effectiveness of UFB in reducing osmotic stress is positively correlated with the intensity of the stress.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Yoshihiro Hirooka, Shintaro Kurashige, Koji Yamane, Yoshinori Watanabe, Misako Kakiuchi, Daisuke Ishikawa, Taku Miyagawa, Kazuya Iwai, Morio Iijima
Summary: The study evaluated the effect of a top dressing approach to direct spent coffee grounds (SCGs) application on crop biomass, soil improvement, and weed control through double cropping field experiments using wheat and soybean. Results showed that top dressing with SCGs after crop germination significantly increased soil total carbon and nitrogen contents.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Koji Yamane, Moena Nishikawa, Yoshihiro Hirooka, Yusaku Narita, Tsukasa Kobayashi, Misako Kakiuchi, Kazuya Iwai, Morio Iijima
Summary: This study investigated the physiological damage induced by heat stress in Coffea arabica plants and found that exposure to 45 degrees Celsius can cause leaf damage. The decrease in SOD and CAT activities under heat stress may lead to increased levels of reactive oxygen species and subsequent cellular damage.
PLANT PRODUCTION SCIENCE
(2022)
Article
Agronomy
Yoshihiro Hirooka, Shintaro Kurashige, Koji Yamane, Misako Kakiuchi, Taku Miyagawa, Kazuya Iwai, Morio Iijima
Summary: The application of spent coffee grounds (SCG) has been found to be an effective weed control measure in agricultural fields. This study demonstrated that the plow-in application of 10 kg m(-2) of SCG every 4 months was effective for weed control in an upland field converted from a paddy field. Further exploration of other potential applications of SCG as a means of weed control would be valuable.
Article
Agronomy
Kuume B. P. Enguwa, Lydia N. Horn, Simon K. Awala
Summary: In semi-arid Central Namibia, poor sandy soils limit sustainable crop production. We found that full irrigation and the use of biochar and other soil amendments can improve cabbage yield and quality, making them suitable for agricultural production in central Namibia.
IRRIGATION AND DRAINAGE
(2023)
Article
Meteorology & Atmospheric Sciences
Simon Kamwele Awala, Kudakwashe Hove, Johanna Shekupe Valombola, Helena Nalitende Nafuka, Evans Kamwi Simasiku, Barthlomew Chataika, Lydia Ndinelao Horn, Simon Angombe, Levi S. M. Akundabweni, Osmund D. Mwandemele
Summary: Climate change in semi-arid regions has led to a shorter growing season and changes in sowing time for pearl millet crops, affecting yield. By analyzing rainfall patterns and trends, adaptation options for the North-Central Region of Namibia were proposed. The study also found that choosing the right sowing date is crucial for grain production.
Article
Food Science & Technology
Barthlomew Yonas Chataika, Levi Shadeya-Mudogo Akundabweni, Julia Sibiya, Enoch G. Achigan-Dako, Deedi E. O. Sogbohossou, Kingdom Kwapata, Simon Awala
Summary: Spider plant is one of the most important African Leafy Vegetables (ALVs) that can contribute significantly to household food security and nutritional needs. However, its production is challenged by inadequate research and smallholder farmers' preferences. This study identified the main production challenges and traits preferred by farmers in northern Namibia and central Malawi. The findings highlight the importance of demand-led crop improvement trials to meet the needs of end-users.
FRONTIERS IN SUSTAINABLE FOOD SYSTEMS
(2022)