Estimation of canopy water content in maize using machine learning and multispectral vegetation indices: comparison of Adaboost regression and other methods DOI
Leonardo Pinto de Magalhães, Fabrí­cio Eduardo Rossi

Journal of Applied Remote Sensing, Journal Year: 2024, Volume and Issue: 18(04)

Published: Dec. 11, 2024

Maize plays an important role in global agriculture, with significant productive value various regions. Effective water management is of paramount importance this crop as stress at specific vegetative stages (e.g., V6) can have a detrimental impact on its development and productivity. Accordingly, we aim to compare regression models the indirectly estimating canopy content (CWC) equivalent thickness (EWT) maize. To end, indices were calculated related CWC EWT using different wavelengths [visible, red, red-edge (RE), near infrared] obtained from Sentinel satellite images. The red edge band demonstrated strongest correlation content. Four constructed input variables. utilized study multiple linear (MLR), ridge (RR), random forest (RFR), AdaBoost (AR). Ensemble models, such AR, are seldom cited literature (there no studies measuring for maize) may serve alternatives parameters. This hypothesis was validated by demonstrating superior performance model compared others used here. In conclusion, AR MLR, RR, RFR, R2 0.991 0.972 EWT. RFR exhibited 0.982 0.948 these two indices. Therefore, methodology employed proved effective obtaining both over analyzed period.

Language: Английский

The complex transcriptional regulation of heat stress response in maize DOI Creative Commons

Mingxiu Ruan,

Heng Zhao,

Yujing Wen

et al.

Stress Biology, Journal Year: 2024, Volume and Issue: 4(1)

Published: April 26, 2024

As one of the most important food and feed crops worldwide, maize suffers much more tremendous damages under heat stress compared to other plants, which seriously inhibits plant growth reduces productivity. To mitigate heat-induced adapt high temperature environment, plants have evolved a series molecular mechanisms sense, respond temperatures stress. In this review, we summarized recent advances in regulations underlying sensing, response memory maize, especially focusing on several pathways signals complex transcriptional regulation ZmHSFs (Heat Shock Factors) response. addition, highlighted interactions between epigenetic factors coordinately regulating memory. Finally, laid out strategies systematically elucidate regulatory network response, discussed approaches for breeding future heat-tolerance maize.

Language: Английский

Citations

10
Integrated analysis of transcriptome, sRNAome, and degradome involved in the drought-response of maize Zhengdan958 DOI Creative Commons
Shuqiong Yang, Jiafei Liu, Lingling Cao

et al.

Open Life Sciences, Journal Year: 2025, Volume and Issue: 20(1)

Published: Jan. 1, 2025

Drought is a major abiotic stress in restricting the growth, development, and yield of maize. As significant epigenetic regulator, small RNA also functions connecting transcriptional post-transcriptional regulatory network. Further to help comprehending molecular mechanisms underlying drought adaptability tolerance maize, an integrated multi-omics analysis transcriptome, sRNAome, degradome was performed on seedling roots elite hybrid Zhengdan958 under stress. In this study, 2,911 genes, 32 conserved miRNAs, 12 novel miRNAs showed significantly differential expression Moreover, 6,340 target genes 445 were validated using sequencing, forming 281 miRNA-mRNA pairs control (CK) drought-stressed (DS) library. These mainly involved plant hormone signal transduction phenylpropanoid biosynthesis pathways. The revealed that five DEmiRNA-mRNA displayed negatively correlated patterns, which verified by qRT-PCR. Tissue-specific profile network miR528a/b-Zm00001d021850, miR408a/b-Zm00001d020794, miR164e-Zm00001d003414 might be essential root-specific response maize seedlings. worthwhile will promote functional characterization modules stress, potentially contribute drought-resistance breeding

Language: Английский

Citations

1
Indices to Identify Historical and Future Periods of Drought for the Maize Crop (Zea mays L.) in Central Mexico DOI Creative Commons
Alejandro Cruz-González, Ramón Arteaga-Ramírez, Ignacio Sánchez Cohen

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 460 - 460

Published: Feb. 13, 2025

Agricultural drought is a condition that threatens natural ecosystems, water security, and food security. The timely identification of an agricultural event essential to mitigating its effects. However, achieving reliable accurate assessment challenging due the interannual variability precipitation in region. Therefore, objective this study was identify months with during cycle maize crop (Zea mays L.) Atlacomulco Rural Development District (ARDD) as area using SPI SPEI indices their impact on each phenological stage. results show when analyzing historical period (1985–2017), ARDD region prone droughts duration one month. stages grain filling ripening were most vulnerable, since SPEI-1 quantify 25% 31% total occur those stages, respectively. Towards 2041–2080 horizon, MCG ACCESS-ESM1-5 SSP2-4.5 scenario identified occurrence dry periods 17% 20% by SPEI, respectively, while for SSP5-8.5, 22% number corresponded Greater recurrence will be observed future, specifically after year 2061, meaning increase frequency events region, causing difficult erratic productive conditions threatening sustainable development. it necessary take action mitigate effects climate change sector.

Language: Английский

Citations

1
Foliar Application of γ-Polyglutamic Acid Enhances Growth, Yield, and Rhizosphere Microbiota of Summer Maize Under Varied Water Regimes DOI Creative Commons
Yi Wang,

Zhenfeng Guo,

Shujie Zhang

et al.

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 754 - 754

Published: March 20, 2025

Amidst escalating global water scarcity and the urgent need for sustainable agricultural practices, exploration of efficient eco-friendly aids has become paramount. This field experiment investigated effects foliar γ-polyglutamic acid (γ-PGA) application on summer maize under two irrigation levels (0 m3·ha−1 900 at bell-mouth stage) three γ-PGA spraying treatments. The results demonstrated that both significantly influenced yield various growth parameters, with notable interaction effects. Compared to control, single double applications increased by 33.3% 37.0%, respectively, while enhancing dry matter accumulation nutrient uptake. Foliar also altered rhizosphere microbial community composition, increasing abundances Proteobacteria Actinobacteria, as well beneficial bacteria such Arthrobacter, Sphingomonas, Streptomyces, Altererythrobacter. Additionally, it population Dung Saprotroph fungi, which are crop growth. These findings suggest can promote holds significant potential applications.

Language: Английский

Citations

1
Plant diversity as a sustainable strategy for mitigating biotic and abiotic stresses in tomato cultivation DOI Creative Commons
Vianii Cruz-López, Carlos Granados-Echegoyen, Rafael Pérez‐Pacheco

et al.

Frontiers in Sustainable Food Systems, Journal Year: 2024, Volume and Issue: 8

Published: Feb. 6, 2024

Sustainable agriculture has become a global priority in response to increasing food demand and the challenges confronting agricultural production, such as biotic abiotic stresses. In this review, we delve into role of plant diversity mitigating these stressors within tomato cultivation. Our investigation reveals that most extensively studied companion species are Vicia villosa Roth, Coriandrum sativum L., Allium cepa while primary under scrutiny include nutrient deficiencies, aerial pests, soil-borne pathogenic diseases. Regarding cover crop system demonstrated its capacity provide essential nutrients directly indirectly plants. addressing pests pathogens, all cultivation systems exhibit contributions. Finally, assert incorporating agroecosystems can effectively counteract various types stressors. These benefits align with application agroecological principles development sustainable agroecosystems. Further assessments effects additional imperative. This should encompass identification their distribution, optimal quantities, enhance benefits. Ultimately, evaluations will aid formulation comprehensive guidelines facilitate selection utilization for long-term sustainability.

Language: Английский

Citations

7
Biological Nano-Agrochemicals for Crop Production as an Emerging Way to Address Heat and Associated Stresses DOI Creative Commons
József Prokisch, Aya Ferroudj,

Safa Labidi

et al.

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(15), P. 1253 - 1253

Published: July 26, 2024

Climate change is a global problem facing all aspects of the agricultural sector. Heat stress due to increasing atmospheric temperature one most common climate impacts on agriculture. has direct effects crop production, along with indirect through associated problems such as drought, salinity, and pathogenic stresses. Approaches reported be effective mitigate heat include nano-management. Nano-agrochemicals nanofertilizers nanopesticides are emerging approaches that have shown promise against stress, particularly biogenic nano-sources. Nanomaterials favorable for production their low toxicity eco-friendly action. This review focuses different stresses production. Nano-management crops under including application nanopesticides, discussed. The potential limitations these nano-agrochemicals reviewed. Potential nanotoxicity need more investigation at local, national, levels, well additional studies into soil, plant, microbial properties processes.

Language: Английский

Citations

3
Odyssey of environmental and microbial interventions in maize crop improvement DOI Creative Commons
Alok Kumar Singh, Alok Kumar Srivastava, Parul Johri

et al.

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 9, 2025

Maize (Zea mays) is India's third-largest grain crop, serving as a primary food source for at least 30% of the population and sustaining 900 million impoverished people globally. The growing human has led to an increasing demand maize grains. However, cultivation faces significant challenges due variety environmental factors, including both biotic abiotic stresses. Abiotic stresses such salinity, extreme temperatures, drought, along with factors like bacterial, fungal, viral infections, have drastically reduced production quality worldwide. interaction between these complex; instance, stress can heighten plant's susceptibility pathogens, while overabundance pests exacerbate response stress. Given complexity interactions, comprehensive studies are crucial understanding how simultaneous presence affects crop productivity. Despite importance this issue, there lack data on combinations impact in key agricultural regions. This review focuses developing stress-tolerant varieties, which will be essential maintaining yields future. One promising approach involves use Plant Growth-Promoting Rhizobacteria (PGPR), soil bacteria that colonize rhizosphere interact plant tissues. Scientists increasingly exploring microbial strategies enhance maize's resistance Throughout process, insect microorganisms pose threats maize, diminishing quantity grain. Among various causing degradation, insects most prevalent, followed by fungal infections. also delves into latest advancements applying beneficial rhizobacteria across different agroecosystems, highlighting current trends offering insights future developments under normal conditions.

Language: Английский

Citations

0
Comprehensive structural, evolutionary and functional analysis of superoxide dismutase gene family revealed critical role in salinity and drought stress responses in chickpea (Cicer arietinum L.) DOI

Ashima Nehra,

Gopal Kalwan,

D. S. Taneja

et al.

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 226, P. 110042 - 110042

Published: May 21, 2025

Language: Английский

Citations

0
Development of a microwave sensor for the non-invasive detection of plant responses to water stress: A practical application on maize (Zea mays L.) DOI Creative Commons

Valeria Lazzoni,

Danilo Brizi, Nicolina Staglianò

et al.

Biosystems Engineering, Journal Year: 2024, Volume and Issue: 246, P. 191 - 203

Published: Aug. 14, 2024

Language: Английский

Citations

2
ZmSCE1a positively regulates drought tolerance by enhancing the stability of ZmGCN5 DOI Open Access
Tianyu Feng, Yuxian Wang, Mingcai Zhang

et al.

The Plant Journal, Journal Year: 2024, Volume and Issue: 120(5), P. 2101 - 2112

Published: Oct. 27, 2024

SUMMARY Drought stress impairs plant growth and poses a serious threat to maize ( Zea mays ) production yield. Nevertheless, the elucidation of molecular basis drought resistance in is still uncertain. In this study, we identified ZmSCE1a, SUMO E2‐conjugating enzyme, as positive regulator tolerance maize. Molecular biochemical assays indicated that E3 ligase ZmMMS21 acts together with ZmSCE1a SUMOylate histone acetyltransferase complexes (ZmGCN5‐ZmADA2b). SUMOylation ZmGCN5 enhances its stability through 26S proteasome pathway. Furthermore, ‐overexpressing plants showed performance. It alleviated accumulation, malondialdehyde content, ion permeability. What's more, transcripts stress‐responsive genes abscisic acid (ABA)‐dependent were also significantly upregulated under stress. Overexpression enhanced drought‐induced ABA seedlings. Taken together, our results indicate ZmGCN5, thereby alleviating oxidative damage enhancing response

Language: Английский

Citations

2