Article
Plant Sciences
Shuo Liu, Naheeda Begum, Tingting An, Tuanjie Zhao, Bingcheng Xu, Suiqi Zhang, Xiping Deng, Hon-Ming Lam, Henry T. Nguyen, Kadambot H. M. Siddique, Yinglong Chen
Summary: Phenotypic variation and correlations among root traits in soybean varieties play a crucial role in plant growth and adaptation strategies. By using a semi-hydroponic system, this study explored the variability in root morphological traits of 171 soybean genotypes, identifying significant positive correlations between root length/mass and shoot mass. The reliability of the semi-hydroponic system in phenotyping root trait variability at the early growth stage in soybean germplasms was validated through consistent rankings of genotypes in important root traits.
Article
Plant Sciences
Shengnan Zhu, Qi Guo, Yingbin Xue, Xing Lu, Tao Lai, Cuiyue Liang, Jiang Tian
Summary: Phosphorus (P) is an essential nutrient that is easily fixed in soils, leading to most of the soil P existing in the form of inaccessible organic phosphorus (Po), particularly phytate-P. This study identified a Pi-starvation responsive GmPAP15a in soybean, which plays a vital role in phytate-P utilization and is regulated at both transcriptional and glycosylation modification levels. The results highlight the GmPHR9/GmPHR32-GmPAP15a signaling pathway that controls phytate-P utilization in soybean.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Nan Sun, Lin Huang, Hongcheng Zhao, Nan Zhang, Xianyong Lin, Chengliang Sun
Summary: The application of Azospirillum brasilense can improve plant adaptation to Pi deficiency by promoting root hair development, enhancing acid phosphatase activity, and increasing Pi transporter expression levels.
PLANT AND CELL PHYSIOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Yuxin Zhang, Qianqian Zhang, Meina Guo, Xueqing Wang, Tianjie Li, Qingyu Wu, Lihui Li, Keke Yi, Wenyuan Ruan
Summary: The availability of inorganic phosphate (Pi) is crucial for the growth and yield of crops. A transcription factor called NIGT1 has been found to regulate plant growth and response to Pi starvation by repressing the expression of growth-related and Pi-signaling genes. This helps to achieve a balance between growth and response under varying Pi conditions. NIGT1 also plays a role in regulating plant Pi homeostasis and acts as a safeguard against hyper-response during Pi starvation stress.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Xuanjun Feng, Li Jia, Yunting Cai, Huarui Guan, Dan Zheng, Weixiao Zhang, Hao Xiong, Hanmei Zhou, Ying Wen, Yue Hu, Xuemei Zhang, Qingjun Wang, Fengkai Wu, Jie Xu, Yanli Lu
Summary: Root architecture remodelling plays a critical role in maintaining forage moisture in water-limited soil. The study discovered that ABA-inducible ZmDRO1 in maize can promote root growth in the downward direction and enhance water acquisition from deeper soil, resulting in improved drought resistance and grain yield under water-limited conditions. This finding suggests the potential application of ABA-inducible ZmDRO1 in breeding drought-resistant maize varieties.
PLANT BIOTECHNOLOGY JOURNAL
(2022)
Article
Plant Sciences
Pedro Castro-Valdecantos, Purificacion A. Martinez-Melgarejo, Francisco Perez-Alfocea, Jiang Tian, Ian C. Dodd
Summary: The excision of stem phloem tissue between the cotyledonary and the first unifoliate leaf, combined with low phosphorus (P) conditions, modulated the gene expression related to P homeostasis, sucrose metabolism, hormone homeostasis, and ABA signaling in roots and leaves. P deprivation mainly upregulated root and leaf P homeostasis gene expression in intact plants, while girdling suppressed root expression of these genes but increased root P concentrations and decreased leaf P concentrations.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Agronomy
Yalin Li, Xinyu Yang, Xuewen Li, Chuang Wang, Guangda Ding, Fangsen Xu, Sheliang Wang, Hongmei Cai, John P. Hammond, Sergey Shabala, Min Yu, Lei Shi
Summary: This study investigated the response of Brassica napus to phosphate starvation under heterogeneous phosphate supply and the regulatory role of jasmonic acid (JA) in the systemic response. The results showed that heterogeneous phosphate supply systematically modified the root morphology and nutrient uptake of B. napus. Jasmonic acid enhanced the systemic phosphate starvation response by regulating root morphology and inducing expression of specific genes.
Article
Plant Sciences
Alessandra Rogato, Vladimir Totev Valkov, Maurizio Chiurazzi
Summary: This study provides a general description of the regulatory transcriptional and spatial profile of expression of the Lotus japonicus nitrate transporter NRT2 family. The involvement of the LjNRT2.3 gene in root nitrate acquisition and lateral root elongation pathways under nitrogen starvation conditions is also reported, along with an epistatic relationship between LjNRT2.3 and LjNRT2.1 to optimize the plant's response to prolonged nitrogen starvation.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Jinghua Bai, Yameng Xie, Meihua Shi, Sufei Yao, Wenjing Lu, Kai Xiao
Summary: This study characterizes the role of TaMPK2B, a MAPK family gene, in regulating plant adaptation to low-Pi stress. TaMPK2B improves Pi uptake, root system architecture, and ROS homeostasis by transcriptionally regulating genes associated with these physiological processes.
Review
Plant Sciences
Lingan Kong, Yunxiu Zhang, Wanying Du, Haiyong Xia, Shoujin Fan, Bin Zhang
Summary: Nitrogen is a critical nutrient for wheat growth, but excessive use of nitrogen fertilizers can lead to environmental pollution. Research has shown that wheat plants can adapt to nitrogen starvation through signaling mechanisms and optimizing root system architecture.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Plant Sciences
Zhijian Chen, Linjie Wang, Juan Andres Cardoso, Shengnan Zhu, Guodao Liu, Idupulapati M. Rao, Yan Lin
Summary: Phosphorus is an essential macronutrient for plant growth, and enhancing plant phosphorus efficiency by improving phosphorus acquisition efficiency (PAE) can greatly improve plant growth and productivity. This review focuses on how legume root growth responds to phosphorus deficiency and highlights the various strategies employed by legumes to confront this deficiency by regulating root traits that contribute to improved PAE. Key genes and regulators involved in the developmental and biochemical alterations of root traits are also discussed.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Plant Sciences
Hong Lu, Fei Wang, Yan Wang, Rongbin Lin, Zhiye Wang, Chuanzao Mao
Summary: Phosphorus (P) is an essential macronutrient for plant growth and reproduction. However, the preferred form of P for plant uptake, orthophosphate (Pi), is often fixed in the soil, rendering it unavailable to plants. Due to limited phosphate rock resources, low fertilizer use efficiency, and increased demand for sustainable agriculture, understanding the molecular mechanisms of plant responses to P deficiency and improving plant phosphate efficiency in crops have become crucial.
PLANT CELL AND ENVIRONMENT
(2023)
Article
Plant Sciences
Fujie Liu, Sheng Cai, Lingjun Dai, Baoliang Zhou
Summary: Phosphorus is a vital nutrient for crop productivity, but its low solubility in soil often leads to phosphorus deficiency in plants. The study identified two cotton genes, GhPHT1;4 and GhPHT1;5, which play a role in phosphorus uptake and participate in root architecture modification and phosphorus starvation response in cotton.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Arun Prabhu Dhanapal, Larry M. York, Kasey A. Hames, Felix B. Fritschi
Summary: This genome-wide association study on field-grown soybeans identified multiple SNPs associated with root traits and marked various loci with potential impact on root architecture. Further research is needed to confirm the markers and candidate genes identified, and to explore the importance of different root characteristics for soybean productivity under diverse soil and environmental conditions.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Ciro Antonio Rosolem, Thiago Barbosa Batista, Patricia Pereira Dias, Laudelino Vieira da Motta Neto, Juliano Carlos Calonego
Summary: The joint application of phosphorus (P) and ammonium (N-NH4+) has been shown to increase maize root proliferation and P acquisition in alkaline soils. This study aimed to assess the effect of the joint application of P and N-NH4+ on soybean root growth and P acquisition. The results showed that P fertilization increased the soil P content, decreased the rhizosphere pH, and resulted in increased soybean P uptake and use efficiency.