The Effect of Guttation on the Growth of Bamboo Shoots

Forests ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 31
Author(s):  
Huifang Zheng ◽  
Miaomiao Cai ◽  
Yucong Bai ◽  
Junlei Xu ◽  
Yali Xie ◽  
...  
Keyword(s):  
Plant Growth ◽  
Organic Acids ◽  
Water Transport ◽  
Normal Growth ◽  
Vascular Bundles ◽  
Anatomical Feature ◽  
Biological Phenomenon ◽  
Transport Pathway ◽  
Bamboo Shoots ◽  
Positive Effect

Guttation is the process of exudating droplets from the tips, edges, and adaxial and abaxial surfaces of the undamaged leaves. Guttation is a natural and spontaneous biological phenomenon that occurs in a wide variety of plants. Despite its generally positive effect on plant growth, many aspects of this cryptic process are unknown. In this study, the guttation phenomenon characteristic of bamboo shoots and the anatomical feature of these and culm sheaths were systematically observed. In addition, the water transport pathway and the compounds in guttation droplets of bamboo shoots were analyzed, and the effect of bamboo sheaths’ guttation on the growth of bamboo shoots was assessed. The results revealed that bamboo shoots began to exudate liquid in the evening through to the next morning, during which period the volume of guttation liquid gradually increases and then decreases before sunrise. Many vascular bundles are in bamboo shoots and culm sheaths to facilitate this water transport. The exudate liquid contains organic acids, sugars, and hormones, among other compounds. Our findings suggest that the regular guttation of the sheath blade is crucial to maintain the normal growth of bamboo shoots.

scholarly journals Boron alters carboxyl group binding capacity and Al transport pathway to relieve Al toxicity

2019 ◽  
Author(s):  
Lei Yan ◽  
Muhammad Riaz ◽  
Jiayou Liu ◽  
Yalin Liu ◽  
Yu Zeng ◽  
...  
Keyword(s):  
Plasma Membrane ◽  
Plant Growth ◽  
Atpase Activity ◽  
Binding Capacity ◽  
Pectin Methylesterase ◽  
Al Toxicity ◽  
Carboxyl Group ◽  
Transport Pathway ◽  
Hydroponic Experiment ◽  
Positive Effect

AbstractBoron (B) is indispensable for plant growth and has been reported in the mitigation of aluminum (Al) toxicity in different plants. This study unraveled the efficacy of B in reducing the toxicity of Al to trifoliate orange seedlings in a hydroponic experiment. In the current study, B supply had a positive effect on root length and plant growth-related parameters, and attenuated Al-induced inhibition of plasma membrane H+-ATPase activity. The results of XPS and SEM-EDS revealed that B reduces the Al accumulation in root cell wall (CW), especially acts on pectin fractions (alkali-soluble pectin), accompanied by suppressing the pectin synthesis, inhibiting pectin methylesterase (PME) activity and PME expression. Furthermore, B application inhibits NRAT1 expression while increases ALS1 expression, which are responsible for restraining Al transport from external cells to the cytoplasm and accelerating Al divert to vacuoles, and the results can be further demonstrated by TEM-EDS analysis. Taken together, our results indicated that B mainly promotes the efflux of H+ by regulating the plasma membrane H+-ATPase activity, futhur reduce the demethylation of pectin to weaken Al binding ability to carboxyl. More importantly, B alleviated some of the toxic effects of Al by decreasing the deposition of Al in cytoplasm and compartmentalizes Al into vacuoles.One-sentence summaryBoron can reduce the binding amount of carboxyl group to Al in pectin, decreasing the deposition of Al in cytoplasm and compartmentalizes Al into vacuoles, thereby reduce the toxicity of Al to plants..

Alcohol-free beverages for functional purposes

2021 ◽  
pp. 438-441
Author(s):  
L.A. Efimov ◽  
K.R. Khasanova ◽  
A.A. Nazmieva ◽  
T.Yu. Gumerov
Keyword(s):  
Organic Acids ◽  
Dietary Fiber ◽  
Human Body ◽  
Mineral Waters ◽  
Metabolic Processes ◽  
Physiological Functions ◽  
Functional Ingredients ◽  
Sports Drinks ◽  
Positive Effect ◽  
Improve Health

Functional drinks are intended for systematic consumption as part of food rations; they preserve and improve health, as well as reduce the risk of developing certain diseases. Functional drinks contain ingredients that have the ability to have a positive effect on physiological functions and metabolic processes in the human body. The functional ingredients of alcohol-free beverages are: vitamins, macro- and microelements, dietary fiber, organic acids, phenolic and other compounds. Functional drinks include non-alcoholic energy drinks, fortified juices and sports drinks, therapeutic and therapeutic-table mineral waters.

Development of Integrated Simulator of Water Transport and Plant Growth as an Evaluation Tool of Arid Land Afforestation for CO2 Fixation

2003 ◽  
Vol 36 (4) ◽  
pp. 383-390 ◽  
Author(s):  
Yasuyuki Egashira ◽  
Daisuke Tomii ◽  
Korekazu Ueyama ◽  
Nobuhide Takahashi ◽  
Toshinori Kojima ◽  
...  
Keyword(s):  
Plant Growth ◽  
Water Transport ◽  
Co2 Fixation ◽  
Arid Land ◽  
Evaluation Tool

scholarly journals Growth and grain yield of eight maize hybrids is aligned with water transport, stomatal conductance, and photosynthesis in a semi-arid irrigated system

2021 ◽  
Author(s):  
Sean M Gleason ◽  
Lauren Nalezny ◽  
Cameron Hunter ◽  
Robert Bensen ◽  
Satya Chintamanani ◽  
...  
Keyword(s):  
Stomatal Conductance ◽  
Grain Yield ◽  
Water Transport ◽  
Co2 Assimilation ◽  
Specific Conductance ◽  
Soil Conditions ◽  
Transport Pathway ◽  
Crop Species ◽  
Leaf Level ◽  
Improved Performance

There is increasing interest in understanding how trait networks can be manipulated to improve the performance of crop species. Working towards this goal, we have identified key traits linking the acquisition of water, the transport of water to the sites of evaporation and photosynthesis, stomatal conductance, and growth across eight maize hybrid lines grown under well-watered and water-limiting conditions in Northern Colorado. Under well-watered conditions, well-performing hybrids exhibited high leaf-specific conductance, low operating water potentials, high rates of midday stomatal conductance, high rates of net CO2 assimilation, greater leaf osmotic adjustment, and higher end-of-season growth and grain yield. This trait network was similar under water-limited conditions with the notable exception that linkages between water transport, midday stomatal conductance, and growth were even stronger than under fully-watered conditions. The results of this experiment suggest that similar trait networks might confer improved performance under contrasting climate and soil conditions, and that efforts to improve the performance of crop species could possibly benefit by considering the water transport pathway within leaves, as well as within the whole-xylem, in addition to root-level and leaf-level traits.

Rhizobacterial biofilm and plant growth promoting trait enhancement by organic acids and sugars

Biofouling ◽  
2020 ◽  
Vol 36 (8) ◽  
pp. 990-999
Author(s):  
Jishma Panichikkal ◽  
Radhakrishnan Edayileveetil Krishnankutty
Keyword(s):  
Plant Growth ◽  
Organic Acids ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Organic Acids And Sugars

Application of treated wastewater for cultivation of carnations

2013 ◽  
Vol 8 (3-4) ◽  
pp. 457-460 ◽  
Author(s):  
I. Petousi ◽  
N. Stavroulaki ◽  
M. Fountoulakis ◽  
M. Papadimitriou ◽  
E.I. Stentiford ◽  
...  
Keyword(s):  
Plant Growth ◽  
Domestic Wastewater ◽  
The Other ◽  
Treated Wastewater ◽  
Potted Plants ◽  
Quality Water ◽  
Water Scarce ◽  
Micro Elements ◽  
Positive Effect

The reuse of domestic wastewater for irrigation of floriculture crops is a very promising option in water-scarce areas. On the other hand, there are concerns about the effect of that kind low-quality water on plant growth. The present work examined the effect of irrigation with several type of treated domestic wastewater on production of carnations. Potted plants were irrigated with primary treated, secondary treated and tertiary treated wastewater as well as with water and water with fertilizer. The results shown that carnations can be irrigated with treated wastewater as the growth and quality of plant is equal or better compared with water. Furthermore, it was found that nutrients and micro-elements contained in treated wastewater had as a result positive effect on characteristics of carnations.

scholarly journals Indoleacetic Acid Levels in Wheat and Rice Seedlings under Oxygen Deficiency and Subsequent Reoxygenation

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 276 ◽  
Author(s):  
Vladislav V. Yemelyanov ◽  
Victor V. Lastochkin ◽  
Tamara V. Chirkova ◽  
Sylvia M. Lindberg ◽  
Maria F. Shishova
Keyword(s):  
Plant Growth ◽  
Indoleacetic Acid ◽  
Wide Spectrum ◽  
Oxygen Deficiency ◽  
Control Level ◽  
Oxygen Deprivation ◽  
Rice Seedlings ◽  
Wheat Seedlings ◽  
Production Of Hydrogen ◽  
Positive Effect

The lack of oxygen and post-anoxic reactions cause significant alterations of plant growth and metabolism. Plant hormones are active participants in these alterations. This study focuses on auxin–a phytohormone with a wide spectrum of effects on plant growth and stress tolerance. The indoleacetic acid (IAA) content in plants was measured by ELISA. The obtained data revealed anoxia-induced accumulation of IAA in wheat and rice seedlings related to their tolerance of oxygen deprivation. The highest IAA accumulation was detected in rice roots. Subsequent reoxygenation was accompanied with a fast auxin reduction to the control level. A major difference was reported for shoots: wheat seedlings contained less than one-third of normoxic level of auxin during post-anoxia, while IAA level in rice seedlings rapidly recovered to normoxic level. It is likely that the mechanisms of auxin dynamics resulted from oxygen-induced shift in auxin degradation and transport. Exogenous IAA treatment enhanced plant survival under anoxia by decreased electrolyte leakage, production of hydrogen peroxide and lipid peroxidation. The positive effect of external IAA application coincided with improvement of tolerance to oxygen deprivation in the 35S:iaaM × 35S:iaaH lines of transgene tobacco due to its IAA overproduction.

scholarly journals Alleviation of Salt Stress by Plant Growth-Promoting Bacteria in Hydroponic Leaf Lettuce

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1523 ◽  
Author(s):  
Alessandra Moncada ◽  
Filippo Vetrano ◽  
Alessandro Miceli
Keyword(s):  
Salt Stress ◽  
Plant Growth ◽  
Leafy Vegetables ◽  
Mineral Nutrient ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Leaf Lettuce ◽  
Positive Effect ◽  
Nutrient Solutions

Mediterranean areas with intensive agriculture are characterized by high salinity of groundwater. The use of this water in hydroponic cultivations can lead to nutrient solutions with an electrical conductivity that overcomes the tolerance threshold of many vegetable species. Plant growth-promoting rhizobacteria (PGPR) were shown to minimize salt stress on several vegetable crops but the studies on the application of PGPR on leafy vegetables grown in hydroponics are rather limited and have not been used under salt stress conditions. This study aimed to evaluate the use of plant growth-promoting bacteria to increase the salt tolerance of leaf lettuce grown in autumn and spring in a floating system, by adding a bacterial biostimulant (1.5 g L−1 of TNC BactorrS13 a commercial biostimulant containing 1.3 × 108 CFU g−1 of Bacillus spp.) to mineral nutrient solutions (MNS) with two salinity levels (0 and 20 mM NaCl). Leaf lettuce plants showed a significant reduction of growth and yield under salt stress, determined by the reduction of biomass, leaf number, and leaf area. Plants showed to be more tolerant to salinity in autumn than in spring. The inhibition of lettuce plant growth due to salt stress was significantly alleviated by the addition of the bacterial biostimulant to the MNS, which had a positive effect on plant growth and fresh and dry biomass accumulation of the unstressed lettuce in both cultivation seasons, and maintained this positive effect in brackish MNS, with similar or even significantly higher values of morphologic, physiologic, and yield parameters than those recorded in control unstressed plants.

scholarly journals Proteomic Analysis of the Effect of Inorganic and Organic Chemicals on Silver Nanoparticles in Wheat

2019 ◽  
Vol 20 (4) ◽  
pp. 825 ◽  
Author(s):  
Hafiz Jhanzab ◽  
Abdul Razzaq ◽  
Yamin Bibi ◽  
Farhat Yasmeen ◽  
Hisateru Yamaguchi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Proteomic Analysis ◽  
Growth And Development ◽  
Normal Growth ◽  
Antimicrobial Activities ◽  
Antioxidant Enzyme Activities ◽  
Label Free ◽  
Plant Growth And Development ◽  
Fresh Weight ◽  
Ag Nps

Production and utilization of nanoparticles (NPs) are increasing due to their positive and stimulating effects on biological systems. Silver (Ag) NPs improve seed germination, photosynthetic efficiency, plant growth, and antimicrobial activities. In this study, the effects of chemo-blended Ag NPs on wheat were investigated using the gel-free/label-free proteomic technique. Morphological analysis revealed that chemo-blended Ag NPs resulted in the increase of shoot length, shoot fresh weight, root length, and root fresh weight. Proteomic analysis indicated that proteins related to photosynthesis and protein synthesis were increased, while glycolysis, signaling, and cell wall related proteins were decreased. Proteins related to redox and mitochondrial electron transport chain were also decreased. Glycolysis associated proteins such as glyceraldehyde-3-phosphate dehydrogenase increased as well as decreased, while phosphoenol pyruvate carboxylase was decreased. Antioxidant enzyme activities such as superoxide dismutase, catalase, and peroxidase were promoted in response to the chemo-blended Ag NPs. These results suggested that chemo-blended Ag NPs promoted plant growth and development through regulation of energy metabolism by suppression of glycolysis. Number of grains/spike, 100-grains weight, and yield of wheat were stimulated with chemo-blended Ag NPs. Morphological study of next generational wheat plants depicted normal growth, and no toxic effects were observed. Therefore, morphological, proteomic, yield, and next generation results revealed that chemo-blended Ag NPs may promote plant growth and development through alteration in plant metabolism.

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