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Publications
Publications (235)
Lettuce is an important leafy vegetable and an excellent source of phytochemicals in human diets. However, the metabolic levels in different green and red-type lettuce varieties are not fully explored. Therefore, it is important to explore and identify the selected health-promoting secondary metabolites in green and red-type lettuce varieties with...
Introduction
In precision agriculture, the diagnosis of the nitrogen (N) nutrition status based on the plant phenotype, combined effects of soil types, various agricultural practices, and environmental factors which are essential for plant N accumulation. It helps to assess the N supply for plants at the right time and optimal amount to ensure high...
Nitrogen (N) is an essential element for plant growth and development. The application of a balanced and optimal amount of N is required for sustainable plant yield. For this, different N sources and forms are used, that including ammonium (NH4+) and nitrate (NO3−). These are the main sources for N uptake by plants where NH4+/NO3− ratios have a sig...
In precision agriculture, the nitrogen level is significantly important for establishing phenotype, quality and yield of crops. It cannot be achieved in the future without appropriate nitrogen fertilizer application. Moreover, a convenient and real-time advance technology for nitrogen nutrition diagnosis of crops is a prerequisite for an efficient...
Water management is one of the most important operations in greenhouse baby leaf production. However, growers mainly irrigate the plants based on experience, which generally leads to yield loss, uneven quality, and low water-use efficiency. This study evaluated four evapotranspiration (ET) models, such as Radsum, Penman methods, FAO Penman-Monteith...
Changes in leaf length, width, area, weight, chlorophyll and carotenoids contents, and photosynthetic variables with different leaf positions were investigated in fruit cucumber. Plants were grown on rockwool slabs in an environmentally controlled greenhouse and irrigated by drip fertigation. Leaf measurements were conducted from the first to the 1...
Temperature strongly influences lettuce (Lactuca sativa L.) seed germination. Different lettuce genotypes respond differently to higher temperatures or thermal stress. In this study, we evaluated the germination performance of 304 lettuce accessions incubated at three temperature settings, 21 °C, 28 °C and 35 °C, respectively, for 40 h. At 21 °C, s...
The aim of the current study is to contribute to basic understanding of Piriformospora indica- Brassica campestris sp. chinensis interactions and to assess its impact on clubroot. This study revealed that P. indica, plant-root-colonizing fungus of Basidiomycetes, is capable to reduce the formation of clubroot in B. campestris sp. chinensis which is...
Demand for spring onion seeds is variable and maintaining its supply is crucial to the success of seed companies. Spring onion seed demand forecasting, which can help reduce the high operational costs increased by long-period propagation and complex logistics, has not previously been investigated yet. This paper provides a novel perspective on spri...
Cultivation substrate water status is of great importance to the production of netted muskmelon (Cucumis melo L. var. reticulatus Naud.). A prediction model for the substrate water status would be beneficial in irrigation schedule guidance. In this study, the machine learning random forest model was used to forecast plant substrate water status giv...
Monitoring plant nitrogen (N) in a timely way and accurately is critical for precision fertilization. The imaging technology based on visible light is relatively inexpensive and ubiquitous, and open-source analysis tools have proliferated. In this study, texture- and geometry-related phenotyping combined with color properties were investigated for...
Adequate greenhouse environmental management is very important for improving resource use efficiency and increasing vegetable yield. The objective of this study was to explore suitable climate and cultivation management for cucumber to achieve high yield and build optimal yield models in semi-closed greenhouses. A fruit cucumber cultivar Deltastar...
A high level of antioxidants in organic-produced vegetables has been attributed to soil conditions; however, little is known about the relationships between antioxidants and rhizobacteria under different fertilization treatments. A pot trial for pakchoi (Brassica campestris ssp. chinensis L.) was conducted under greenhouse conditions with: (1) cont...
Carotenoids are a group of versatile isoprenoid pigments, and bioactive constituents found predominantly in fruits and vegetables. Carotenoids play an essential role in the prevention of human diseases and thus facilitate to maintain a good health. They are effective health-promoting compounds, which are significant contributors to our diet and hav...
Lettuce is an important leafy vegetable that represents a significant dietary source of antioxidants and bioactive compounds. However, the levels of metabolites in different lettuce cultivars are poorly characterized. In this study, we used combined GC × GC-TOF/MS and UPLC-IMS-QTOF/MS to detect and relatively quantify metabolites in 30 lettuce cult...
Purple rape is a widely used leafy vegetable in china which exhibits an enormous nutritional value. In this study, different proportions and ratios of substrates, including turf as the main ingredient, coconut coir dust and perlite as raw substrate in combination with varying ratios of biogas slurry (BGS), were applied to cultivate purple rape. Sev...
To assess the influence of drought stress on the growth and nitrogen nutrition status of pakchoi (Brassica campestris ssp. Chinensis L.) at different nitrogen (N) levels, the changes in N accumulation and enzyme activities involved in N assimilation were investigated. The drought was induced by adding polyethylene glycol (PEG) under hydroponic cult...
Pakchoi (Brassica campestris ssp. chinensis) is one of the most popular leafy vegetables, whose production is negatively affected by high NaCl concentration in the soil. In this study, the role of endosymbiont Piriformospora indica in counteracting salinity stress to Pakchoi plants was determined by studying physiological, biochemical, and molecula...
Organic farming is regarded as a promising agricultural management practice to maintain a sustainable ecosystem. However, organic farming often has lower yields than conventional farming, which might be due to the different quantities and qualities of nutrients applied through fertilization in these two contrasting farming practices. Given that nut...
Biogas slurry is a good source of plant nutrients and substituting chemical fertilizers with biogas slurry not only achieve resource utilization of slurry, but also reduce the amount of fertilizer. The present study investigated the influence of different ratios of biogas slurry fertilizer (BSF) on the growth, yield and quality characteristics of o...
Plant-based sensing on water stress can provide sensitive and direct reference for precision irrigation system in greenhouse. However, plant information acquisition, interpretation, and systematical application remain insufficient. This study developed a discrimination method for plant root zone water status in greenhouse by integrating phenotyping...
Background
This study evaluates the influences of bio fertilizers containing mycorrhizal fungi (Glomus fasciculatum, Glomus mosseae) individually or in combination with N-fixer (Azotobacter chroococcum), K solubilizer (Bacillus mucilaginous) and P solubilizer (Bacillus megaterium) on soil fertility and phytochemical levels of spinach. ResultsRoot c...
Hepatitis B virus (HBV) infection is endemic in Asia and chronic hepatitis B (CHB) is a major public health issue worldwide. Current treatment strategies for CHB are not satisfactory as they induce a low rate of hepatitis B surface antigen (HBsAg) loss. Extracts were prepared from lettuce hydroponically cultivated in solutions containing glycine or...
Glycine, the simplest amino acid in nature and one of the most abundant free amino acids in soil, is regarded as a model nutrient in organic nitrogen studies. To date, many studies have focused on the uptake, metabolism and distribution of organic nitrogen in plants, but few have investigated the nutritional performance of plants supplied with orga...
In this study, Aerva javanica was used to extract the essential oil with notable medicinal activities. The chemical composition was investigated by high-performance liquid chromatography (HPLC) and liquid chromatography/mass spectrometry (LC-MS). Ten major chemical compounds were identified as flavonoids derivatives, dihydroxylated and glycosylated...
RNA editing is an important process that deaminates specific cytidines (C) to uridines (U). Wide-ranging organisms, such as plants, viruses, and animals are receiving the advent of different kinds of RNA editing. Site recognition and enzymatic editing mechanism are two distinct processes of RNA editing machinery. Cis elements and trans-factors empo...
Background:
Lettuce is a significant source of antioxidants and bioactive compounds. Nitrate is a cardinal fertilizer in horticulture and influences vegetable yield and quality; however, the negative effects of nitrate on the biosynthesis of flavonoids require further study. It is expected that using fertilizers containing organic N could promote...
This work evaluated the impact of exogenous soil inoculation of beneficial fungal strain Piriformospora indica on phytochemical changes and the related genes expression of Chinese cabbage (Brassica campestris ssp. chinensis L.) by greenhouse pot experiments. High performance liquid chromatography (HPLC) affirmed that among the different combination...
The HPLC-UV chromatogram of sample [(A) 370 nm, (B) 270nm].
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Mass spectra of identified compounds.
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Amplification profile of target genes using SYBR green.
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The appearance of Pakchoi plant cultivated under given treatments.
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Objective:
Biofilms are complex, multi-species bacterial communities that colonize the oral cavity in the form of plaque and are known to cause dental caries and periodontal disease. Present study demonstrated the potential of three selected medicinal plants against isolated and identified dental biofilm forming strains.
Methods:
Pathogenic bact...
With the competitive seeds market and development needs of seed companies, the production of crop seeds, including raw seeds procurement, processing, storage, packaging, and logistics, is complicated. Seeds packaging is one of the most important phases, including automatic and manual packaging. Automatic packaging is highly efficient with high setu...
An ethno-medicinal survey was conducted in District Swabi, Pakistan. Data were collected through field assessment as well as from traditional healers and local inhabitants by conducting personal interviews and questionnaires. Information about 63 medicinal plants belonging to 36 families was recorded. Some plants including Foeniculum vulgare Mill....
Anthocyanin, one of the major secondary metabolites in red wave lettuce, is beneficial for human health and improvement of visual functions in salad. While the anthocyanin measurement in plant mainly relies on chemical analysis to date. In order to explore the possibility of digital image in non-destructive anthocyanin prediction, a quadratic model...
Background
Salinity is one of the increasingly serious environmental problems worldwide for cultivating agricultural crops. The present study was aimed to ascertain the potential of beneficial soil bacterium Azospirillum brasilense to alleviate saline stress in Trifolium repens. Experimental plants (white clover) were grown from seeds and inoculate...
To investigate the physiological responses of plants to high root-zone temperature (HT, 35 °C) stress mitigated by exogenous glutathione (GSH), cucumber (Cucumis sativus L.) seedlings were exposed to HT with or without GSH treatment for 4 days and following with 4 days of recovery. Plant physiological variables, growth, and gene expression related...
Key message
82 melon NAC (CmNAC) genes were identified in melon. We putatively identified the function of CmNAC gene in melon under salt stress.
Abstract
NAC transcription factor proteins play important roles in many biological processes, including plant development and stress responses. To date, few full-length melon NAC proteins have been identif...
Two tunnel experiments with 16 pakchoi cultivars were conducted under organic (ORG) and conventional management systems (CON) in fall and winter to investigate the yield, total N uptake, N uptake efficiency (plant aboveground N uptake at harvest per unit plant available N; NUpE), utilization efficiency (plant dry weight per unit plant aboveground N...
Medicinal plants are the important source of potentially useful chemotherapeutic agents which have made enormous contributions to human health and well-being. The methanolic extract of leaves of Eucalyptus tereticornis for antibacterial activity against the bacterial strain Escherichia coli was investigated. Response surface methodology (RSM) using...
Heat shock is considered an abiotic stress for plant growth, but the effects of heat shock on physiological responses of cucumber plant leaves with and without downy mildew disease are still not clear. In this study, cucumber seedlings were exposed to heat shock in greenhouses, and the responses of photosynthetic properties, carbohydrate metabolism...
ANOVA of the effects of heat shock (HS), downy mildew (MW) and their interaction on physiological variables.
(DOC)
Organic farming avoids the use of synthetic fertilizers and promises food production with minimal environmental impact, however this farming practice does not often result in the same productivity as conventional farming. In recent years, biochar has received increasing attention as an agricultural amendment and by coating it with minerals to form...
Automatic detection of common defects on apples by computer vision is still a challenge due to the similarity in appearance between true defects and stems/calyxes. Because the stem and calyx present a concave feature in apples, this paper proposes a novel stem and calyx recognition method using a computer vision system combined with near-infrared l...
Many studies have shown that plants can utilize organic N in the form of amino acids. However, it is unclear whether the glycine-uptake capability responds differently to various farm management systems, and whether the interaction of farm management type with soil glycine concentrations affects the glycine uptake by plants. A pot experiment was co...
Automatic detection of common defects in spherical fruits by using vision systems is still not available due to the high variability of fruit surface color and the uneven distribution of lightness on spherical fruits. This paper presents a novel lightness correction method for spherical fruits by using hyperspectral imaging system combined with spe...
Purpose The classical nitrogen (N) cycling model has provided good understanding of inorganic N dynamics in agricultural soils, but largely ignores organic N available to plants. The ability of numerous crop plant species to take up and use amino acids underlines the importance of this N pool in agricultural systems; therefore, the soil free amino...
The exposure of fruit surfaces to direct sunlight during the summer months can result in sunburn damage. Losses due to sunburn damage are a major economic problem when marketing fresh apples. The objective of this study was to develop and validate a model for simulating fruit surface temperature (FST) dynamics based on energy balance and measured w...
Given the rapid development of plant genomic technologies, a lack of access to plant phenotyping capabilities limits our ability to dissect the genetics of quantitative traits. Effective, high-throughput phenotyping platforms have recently been developed to solve this problem. In high-throughput phenotyping platforms, a variety of imaging methodolo...
An online sorting method of irregular potatoes is proposed. First, the R-component image is extract, and then the binary image and boundary image are obtained by thresholding method. Second, thirteen essential geometrical features, such as eccentricity, rectangle degree and roundness, and ten Fourier descriptors are extracted. Third, the geometrica...
Watermelon [Citrullus lanatus (Thunb.) Matsum. and Nakai] plug seedlings were stored at 15°C in the light at a photosynthetic photon flux density of 15 µmol·m-2·s-1 or in darkness for 6 days, to evaluate their chloroplast ultrastructure, and associated photosynthetic characteristics. Storage in the dark caused swelling, disordered granal arrangemen...
Salinity is one of the most important abiotic stresses that adversely affects crop growth and productivity. A subtractive suppression hybridization (SSH) library were constructed from the roots of salt-sensitive Yulu cultivar melon seedlings under salt stress; 557 high-quality expressed sequence tags (ESTs) were randomly sequenced, with an average...
Illumination during storage was proven to extend the storability of seedlings, but little attention has been given to the underlying mechanism. To determine how light conditions affect photosynthetic status in watermelon [Citrullus lanatus (Thunb.) Matsum. and Nakai] plug seedlings, differences of stomatal development and relative photosynthetic ch...
An algorithm was proposed to on-line identify the defects and stem-calyx on apples based on lightness correction method and AdaBoost classifier. The ‘Fuji’ apples were selected as the experiment object. First, the RGB images and NIR images of apples were acquired, and NIR images were binarized to obtain the mask images. Second, the R component imag...
Bruising is one of the major defects occurring on apple surface inevitably during postharvest handling and processing stage. To detect slight bruises on apples fast and efficiently, a novel bruises detection algorithm based on hyperspectral imaging and minimum noise fraction transform is proposed. First, the hyperspectral images in the visible and...
Different nitrogen (N) forms may cause changes in the metabolic profiles of plants. However, few studies have been conducted on the effects of amino acid-N on plant metabolic profiles. The main objective of this study was to identify primary metabolites associated with amino acid-N (Gly, Gln and Ala) through metabolic profile analysis using gas chr...
A hydroponic experiment was conducted to study the effects of fertilization with different nitrate/glycine (Gly) ratios on spinach growth and composition of amino acids. Results showed partly replacing nitrate (NO3−) by Gly supplied both nitrogen and carbon nutrition for spinach. Spinach accumulated the equal biomass. Total nitrogen (N) in plant ha...