Drought stress introduces growth, physiological traits and ecological stoichiometry changes in two contrasting Cunninghamia lanceolata cultivars planted in continuous-plantation soils

Abstract Background: The decrease of Cunninghamia lanceolata (Lamb.) production on continually planted soil is an essential problem. In this study, two cultivars (a normal cultivar, NC, and a super cultivar, SC) with two-year-old seedlings were grown in two types of soil (non-planting of Chinese fir, NP soil; continuous planting of Chinese fir, CP soil) with three watering regimes, and the interaction effects on plant growth and physiological traits were investigated. Results: The water contents of normal water control (CK), medium water content (MWC) and low water content (LWC) soil reached 75%-80%, 45%-50% and 20%-25%, respectively, of the field water capacity. The results indicated that both CP soil and LWC soil had negative effects on growth and physiological traits. In both cultivars, CP soil significantly decreased plant growth and the performance of physiological traits. The LWC soil changed the ecological stoichiometry in the three organs, induced oxidative stress, promoted water use efficiency and damaged chloroplast ultrastructure. Compared with NC, the SC cultivar was more tolerant to CP soil and drought stress. Conclusions: The CP soil shows negative effect on C. lanceolata’s physiological traits, and these effects can be exacerbated by drought stress. Therefore, the utilization of continuous planted soil can cultivate improved varieties of C. lanceolata and maintain water capacity. This can improve their growth and physiological performance to a certain extent.

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Drought stress introduces growth, physiological traits and ecological stoichiometry changes in two contrasting Cunninghamia lanceolata cultivars planted in continuous-plantation soils

BMC Plant Biology ◽

10.1186/s12870-021-03159-3 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Fangyuan Bian ◽

Yukui Wang ◽

Baoli Duan ◽

Zhizhuang Wu ◽

Yuanbing Zhang ◽

...

Keyword(s):

Water Content ◽

Nitrogen Use Efficiency ◽

Soluble Protein ◽

Ecological Stoichiometry ◽

Cunninghamia Lanceolata ◽

Physiological Traits ◽

Carotenoid Content ◽

Nitrogen Use ◽

Water Capacity ◽

Use Efficiency

Abstract Background The decrease in Cunninghamia lanceolata (Lamb.) production on continuously planted soil is an essential problem. In this study, two-year-old seedlings of two cultivars (a normal cultivar, NC, and a super cultivar, SC) were grown in two types of soil (not planted (NP) soil; continuously planted (CP) soil) with three watering regimes, and the interactive effects on plant growth and physiological traits were investigated in a greenhouse experiment. The water contents of the soil in the control (CK) (normal water content), medium water content (MWC) and low water content (LWC) treatments reached 75−80 %, 45−50 % and 20−25 % of the field water capacity, respectively. Results The results indicated that the CP soil had a negative effect on growth and physiological traits and that the LWC treatment caused even more severe and comprehensive negative effects. In both cultivars, the CP soil significantly decreased the height increment (HI), basal diameter increment (DI), dry matter accumulation (DMA), net photosynthetic rate (Pn), total chlorophyll content (TChl), carotenoid content (Caro) and photosynthetic nitrogen use efficiency (PNUE). Compared to the NP soil, the CP soil also decreased the proline and soluble protein contents, nitrogen use efficiency (NUE) and phosphorus use efficiency (PUE) and increased the nitrogen:phosphorus ratio in roots, stems and leaves. The LWC treatment decreased growth and photosynthesis, changed ecological stoichiometry, induced oxidative stress, promoted water use efficiency and damaged chloroplast ultrastructure. Significant increases in ascorbate peroxidase (APX), peroxidase (POD), soluble protein and proline contents were found in the LWC treatment. Compared with the NC, the SC was more tolerant to the CP soil and water stress, as indicated by the higher levels of DMA, Pn, and WUE. After exposure to the CP soil and watering regimes, the decreases in biomass accumulation and gas exchange were more pronounced. Conclusions The combination of drought and CP soil may have detrimental effects on C. lanceolata growth, and low water content enhances the impacts of CP soil stress on C. lanceolata seedlings. The superiority of the SC over the NC is significant in Chinese fir plantation soil. Therefore, continuously planted soil can be utilized to cultivate improved varieties of C. lanceolata and maintain water capacity. This can improve their growth and physiological performance to a certain extent.

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Changes in plant growth, leaf relative water content and physiological traits in response to salt stress in peanut (Arachis hypogaea L.) varieties

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha49112049 ◽

2021 ◽

Vol 49 (1) ◽

pp. 12049

Author(s):

Tekam L. MEGUEKAM ◽

Dany P. MOUALEU ◽

Victor D. TAFFOUO ◽

Hartmut STÜTZEL

Keyword(s):

Salt Stress ◽

Plant Growth ◽

Water Content ◽

Arachis Hypogaea ◽

Relative Water Content ◽

Physiological Traits ◽

Salt Tolerant ◽

Arachis Hypogaea L ◽

Relative Water ◽

Leaf Relative Water Content

Salinity is the main environmental factor accountable for decreasing crop productivity worldwide. The effects of NaCl salinity on plant growth (leaf relative water content (RWC), leaf dry weight (LDW), shoot length (SL), number of leaves (NL), number of branches (NB) and total leaf area (TLA) and physiological characteristics (stomatal conductance (gs), transpiration rate (TR), net photosynthetic (Pn), yield of photosystem II (ΦPsII) and the intercellular CO2 concentration (CO2int) in peanut (Arachis hypogaea L.) varieties (‘Vanda’, ‘P244601’ and ‘Pl184948’, widely used in Cameroon, Tanzania and Ghana, respectively, were investigated under hydroponic condition. Plants were subjected to four levels of NaCl (0, 40, 80 and 120 mM) at early seedling growth stage of plant development. Application of NaCl treatment led to a significant decrease in LDW, SL, NL, TLA, Pn, gs, TR and CO2int concentration of ‘Vanda’ and ‘P244601’ compared to untreated plants while the plant growth inhibition was notably noted at 120 mM NaCl in ‘P1184948’ for LDW, SL and NB. The highest depressive effect was detected in gs of salt-sensitive ‘Vanda’ while the lowest were recorded in gs of salt-tolerant ‘P1184948’ at high salinity level. Enhanced NaCl concentrations led to a significant increase in ΦPSII of ‘P1184948’ compared to ‘Vanda’, ‘P244601’ and untreated plants. Leaf CHL content was significantly increased in moderately-tolerant ‘‘P244601’ and salt-tolerant ‘P1184948’ at 80 mM NaCl compared to salt sensitive ‘Vanda’ and untreated plants. The depressive effect of salt on RWC was recorded at 120 mM NaCl in peanut leaves of all varieties. Under salt stress ‘P1184948’ was observed to have relatively higher tolerance on average of all growth and physiological traits than ‘Vanda’ and P244601’ suggesting that it could be grown in salt-affected soils.

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Estimation of genetic components for plant growth and physiological traits of wheat (Triticum aestivum L) under normal and stress conditions

SAARC Journal of Agriculture ◽

10.3329/sja.v13i1.24183 ◽

2015 ◽

Vol 13 (1) ◽

pp. 90-98 ◽

Cited By ~ 2

Author(s):

MK Naeem ◽

M Ahmed ◽

S Noreen ◽

MKN Shah ◽

MS Iqbal

Keyword(s):

Drought Stress ◽

Plant Growth ◽

Water Loss ◽

Selection Criteria ◽

Genetic Variance ◽

Leaf Water ◽

Stress Conditions ◽

Physiological Traits ◽

Genetic Components ◽

Leaf Water Loss

This study was conducted to investigate the genetic variability of plant growth and physiological characters in thirty wheat genotypes under normal and drought stress conditions. Selection of important plant growth and physiological traits are essential component for wheat yield improvement. For this purpose, an experiment was conducted in the glasshouse during 2012-13 to estimate the extent of genetic components viz., genetic variance, coefficient of variability and broad sense heritability for plant growth and physiological traits under normal and drought stress conditions. Higher genetic variance was observed between the genotypes for the cell membrane stability, excised leaf water loss, relative water content, proline, sugar and glycine betain under both conditions. This suggested that these indices can be used as direct selection criteria for wheat improvement. While excised leaf water loss and fresh root weight revealed the least variability for GCV and PCV correspond to high heritability under stress condition. Hence, these traits can be used as indirect selection criteria under stress condition.SAARC J. Agri., 13(1): 90-98 (2015)

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Global Reprogramming of Transcription in Chinese Fir (Cunninghamia lanceolata) during Progressive Drought Stress and after Rewatering

International Journal of Molecular Sciences ◽

10.3390/ijms160715194 ◽

2015 ◽

Vol 16 (12) ◽

pp. 15194-15219 ◽

Cited By ~ 6

Author(s):

Ruiyang Hu ◽

Bo Wu ◽

Huiquan Zheng ◽

Dehuo Hu ◽

Xinjie Wang ◽

...

Keyword(s):

Drought Stress ◽

Chinese Fir ◽

Cunninghamia Lanceolata

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Effect of drought stress on different physiological traits in bread wheat

SAARC Journal of Agriculture ◽

10.3329/sja.v16i1.37418 ◽

2018 ◽

Vol 16 (1) ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

I Nowsherwan ◽

G Shabbir ◽

SI Malik ◽

M Ilyas ◽

MS Iqbal ◽

...

Keyword(s):

Drought Stress ◽

Cell Membrane ◽

Water Content ◽

Chlorophyll Content ◽

Relative Water Content ◽

Membrane Stability ◽

Physiological Traits ◽

Wheat Genotypes ◽

Cell Membrane Stability ◽

Relative Water

The present study was designed to evaluate the changes in different physiological traits such as proline content, cell membrane stability, relative water content and chlorophyll content under drought stress in sixteen wheat genotypes. Wheat genotypes (99FJ-03, Marvi-2000, WC- 13, WC-24, WC-19, Faisalabad-85, Kaghan, Bahawalpur, Zarlashta, Punjab-96, Shafaq, Maxi-pak, WC-20, Chenab-70, AUR-0809, Chakwal) were sown during rabiseason of 2013-14 following randomized complete block design with three replications. Drought stress was induced by withholding water for 30 days at heading and anthesis stage. Genotypes were significant for different physiological traits like relative water content, proline content, cell membrane stability and chlorophyll content under drought stress which indicated that some genotypes were more tolerant against drought stress than others. Among tested wheat genotypes, Maxi-Pak was found to be potential variety for relative water content, cell membrane stability, chlorophyll content and yield. Hence, it can be used in future wheat breeding programme for developing drought tolerant genotypes.SAARC J. Agri., 16(1): 1-6 (2018)

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The Effect of Water Stress on the Physiology of Vinca major 'Variegata'

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.409-410.782 ◽

2013 ◽

Vol 409-410 ◽

pp. 782-787 ◽

Cited By ~ 2

Author(s):

Fei Yong Liao ◽

Ying Xie ◽

Hui Jiang

Keyword(s):

Water Stress ◽

Drought Stress ◽

Plant Growth ◽

Water Content ◽

Net Photosynthetic Rate ◽

Photosynthetic Rate ◽

Irrigation Water ◽

Robinia Pseudoacacia ◽

Effect Of Water ◽

Vinca Major

The effects of water stress on the two year old Vinca majorVariegata were tested for proving the irrigation guidance for its application in the garden. The results showed that the water flood and the drought stress suppressed the plant growth. After treated with flooding for 13days, the qP, ETR, Fv'/Fm' and net photosynthetic rate were decreased, but the qN were increased and the plants were dead. The mid drought stress (the water content of soil were between 20 percent and 30 percent) slightly affected the growth of plant, which embodies in the slight decline of chlorophyll, qP, ETR, Fv'/Fm', Fv/Fm and qP, the ascend of net photosynthetic rate. Drought Stress badly affected the growth of plant, which embodies in the decline of chlorophyll, qP, ETR, Fv'/Fm', Fv/Fm, qP and net photosynthetic rate. The best irrigation for plant was the water content of soil between 20 percent and 30 percent, which does not affect the ornamental value of Robinia pseudoacacia and save the irrigation water. So the application of V. majorVariegata should avoid in the place for over 13 days water flood.

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Application of melatonin-mediated modulation of drought tolerance by regulating photosynthetic efficiency, chloroplast ultrastructure, and endogenous hormones in maize

Chemical and Biological Technologies in Agriculture ◽

10.1186/s40538-021-00272-1 ◽

2022 ◽

Vol 9 (1) ◽

Author(s):

Shakeel Ahmad ◽

Guo Yun Wang ◽

Ihsan Muhammad ◽

Saqib Farooq ◽

Muhammad Kamran ◽

...

Keyword(s):

Drought Stress ◽

Plant Growth ◽

Grain Yield ◽

Photosynthetic Rate ◽

Chloroplast Ultrastructure ◽

Free Radical Scavenger ◽

Radical Scavenger ◽

Melatonin Concentration ◽

Chlorophyll Contents ◽

Hormonal Mechanism

Abstract Background Melatonin played an essential role in numerous vital life processes of animals and captured the interests of plant biologists because of its potent role in plants as well. As far as its possible contribution to photoperiodic processes, melatonin is believed to act as a growth regulator and a direct free radical scavenger/indirect antioxidant. The objective of this study to identify a precise melatonin concentration for a particular application method to improve plant growth requires identification and clarification. Methods This work establishes unique findings by optimizing melatonin concentration in alleviating the detrimental effects of drought stress in maize. Maize plants were subjected to drought stress (40–45% FC) after treatments of melatonin soil drenching at different concentrations (50, 100, and 150 µM) to consider the changes of growth attribute, chlorophyll contents, photosynthetic rate, relative water content (RWC), chloroplast ultrastructure, endogenous hormonal mechanism, and grain yield. Results Our results showed that the application of melatonin treatments remarkably improved the plant growth attributes, chlorophyll contents, photosynthetic rate, RWC, hormonal mechanism, and grain yield plant−1 under drought conditions at a variable rate. Conclusion Our current findings hereby confirmed the mitigating potential of melatonin application 100 µM for drought stress by maintaining plant growth, hormone content, and grain yield of maize. We conclude that the application of melatonin to maize is effective in reducing drought stress tolerance. Graphical Abstract

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