Stress resistance levels at the time of lifting affect post-planting performance of<i>Quercus robur</i>seedlings

Harper, R. C.; O'Reilly, Conor

doi:10.1080/11263504.2012.705351

Cited by 3 publications

(4 citation statements)

References 20 publications

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“…It is worth noting that most previous studies have measured successful germination of Fagaceae acorns as a radicle protrusion and establishing root [69][70][71][72], thus limiting our ability to understand the full germination process until leaf emergence. On the other hand, many Quercus species are known to have ePD, with the root emerging immediately after dispersal or after PD is broken, but with delayed shoot emergence [26,51,68,73,74].…”

Section: Discussionmentioning

confidence: 99%

The Co-Occurrence of Physiological and Epicotyl Physiological Dormancy in Three Desiccation-Sensitive Castanopsis (Fagaceae) Acorns from China with Specific Reference to the Embryonic Axis Position

Li,

Jaganathan,

Kang

et al. 2023

Forests

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Ecological significance of dormancy in desiccation-sensitive seeds is poorly understood. Quercus exhibits mutually exclusive occurrence of physiological (PD) and epicotyl dormancy (ePD), with no reported co-occurrence or dormancy class in other genera. We aimed to understand the dormancy in three Castanopsis species and document desiccation sensitivity and germination patterns concerning the embryonic axis position. We hypothesized that Castanopsis acorns are recalcitrant and potentially dormant. Fresh and cold-stratified acorns of Castanopsis chinensis, Castanopsis purpurella, and Castanopsis sclerophylla were subjected to desiccation and germination. Seedling emergence and internal morphology was monitored following cold (CS) and warm (WS) stratification. Fresh acorns had radicles emerge only after CS but require WS for shoot emergence. Drying to 20% moisture content led to complete death. In C. purpurella and C. sclerophylla, the embryonic axis was near the scar, and germination occurred by cracking the pericarp near the scar, which contrasts with C. chinensis. Moderate drying relieved dormancy due to the mechanical resistance of the pericarp. All three acorns were desiccation-sensitive and dormant. This is the first explicit report on PD and ePD co-occurrence in desiccation-sensitive seeds, but literature surveys allow for inference of such coexistence. CS alleviated PD and WS relieved ePD. Winter temperatures break PD, and acorns germinate during spring, but shoot emergence is delayed until summer. Our results are instructive for research on the dormancy of desiccation-sensitive species and the reproduction of Fagaceae species in subtropical forests.

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Section: Discussionmentioning

confidence: 99%

The Co-Occurrence of Physiological and Epicotyl Physiological Dormancy in Three Desiccation-Sensitive Castanopsis (Fagaceae) Acorns from China with Specific Reference to the Embryonic Axis Position

Li,

Jaganathan,

Kang

et al. 2023

Forests

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“…Heavy metal pollution has long been viewed as a limitation to the improvement of food crop production worldwide (Aganchich et al 2007;Shao et al 2008;Bacchetta et al 2012;Song et al 2012Song et al , 2013Assini et al 2013;Harper & O'Reilly 2013;Jiménez et al 2013;Moreno-Jiménez et al 2013). In recent years, it has become clear that heavy metal ions (especially divalent ions) exert striking toxic effects on plant growth and seedling development (Shao et al 2008;Manchanda & Garg 2011;Radoglou et al 2011;Xiao et al 2011;Minutolo et al 2012;Rahman et al 2012;Song et al 2012Song et al , 2013 Guo et al 2007;Shao et al 2008;Chao et al 2010;Bajguz 2011;Baldantoni et al 2011;Basile et al 2011;Doganlar & Atmaca 2011;Ippolito et al 2011;Manchanda & Garg 2011;Xiao et al 2011;Fellet et T P 2 T P 3 T P 4 T P 5 T P 6 T P 7 T P 8 T P 9 T P 1 0 T P 1 1 T P 1 2 T 0 ( C K ) T P 1 T P 2 T P 3 T P 4 T P 5 T P 6 T P 7 T P 8 T P 9 T P 1 0 T P 1 1 T P 1 2 T 0 ( C K ) T P 1 T P 2 T P 3 T P 4 T P 5 T P 6 T P 7 T P 8 T P 9 T P 1 0 T P 1 1 T P 1 2 T 0 ( C K ) T P 1 T P 2 T P 3 T P 4 T P 5 T P 6 T P 7 T P 8 T P 9 T P 1 0 T P 1 1 T P 1 2 The effects of EGTA and SA on MDA contents in seedling leaves under PEG treatments.…”

Section: Discussionmentioning

confidence: 99%

“…Anti-oxidative enzymes, such as ascorbate peroxidase, CAT, POD, and SOD, play a vitally important role in eliminating free oxygen radicals and peroxides produced by heavy metal exposure and in preventing plant cell damage (especially leave cells) (Aganchich et al 2007;Guo et al 2007;Shao et al 2008;Doganlar & Atmaca 2011;Ippolito et al 2011;Manchanda & Garg 2011;Xiao et al 2011;Fellet et al 2012;Kalavrouziotis & Koukoulakis 2012;Minutolo et al 2012;Rahman et al 2012;Song et al 2012Song et al , 2013Bachrouch et al 2013). Some researchers pointed out that antioxidative enzymes in plant cells exert promoting effects on processes involved in photosynthesis, and that damaged or reduced activity of anti-oxidative enzymes inhibits the progression of photosynthesis (Ephrath et al 2011;Giorio & Nuzzo 2012;Oukarroum et al 2012;Vitale et al 2012;Alaimo et al 2013;Harper & O'Reilly 2013;Nogués et al 2013). Therefore, anti-oxidative enzymes can be taken as important biomarkers for monitoring environmental pollutants and as important indexes for revealing the toxic mechanisms by which these pollutants affect plant growth and development.…”

mentioning

confidence: 99%

“…Many researches have also indicated that some heavy metal ions can have devastating effects on the enzymatic systems of plant cells and can Pb to the denaturation of macromolecules such as DNA, RNA, and proteins, eventually causing cell death (Aganchich et al 2007;Shao et al 2008;Chao et al 2010;Bajguz 2011;Baldantoni et al 2011;Basile et al 2011;Manchanda & Garg 2011;Xiao et al 2011;Minutolo et al 2012;Rahman et al 2012;Song et al 2012Song et al , 2013Harper & O'Reilly 2013;Jiménez et al 2013). Anti-oxidative enzymes, such as ascorbate peroxidase, CAT, POD, and SOD, play a vitally important role in eliminating free oxygen radicals and peroxides produced by heavy metal exposure and in preventing plant cell damage (especially leave cells) (Aganchich et al 2007;Guo et al 2007;Shao et al 2008;Doganlar & Atmaca 2011;Ippolito et al 2011;Manchanda & Garg 2011;Xiao et al 2011;Fellet et al 2012;Kalavrouziotis & Koukoulakis 2012;Minutolo et al 2012;Rahman et al 2012;Song et al 2012Song et al , 2013Bachrouch et al 2013).…”

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confidence: 99%

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Ethylene glycol tetra-acetic acid and salicylic acid improve anti-oxidative ability of maize seedling leaves under heavy-metal and polyethylene glycol 6000-simulated drought stress

Song

Peng

Shao

et al. 2014

Plant Biosystems - An International Journal Dealing with all As

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(2014) Ethylene glycol tetra-acetic acid and salicylic acid improve anti-oxidative ability of maize seedling leaves under heavy-metal and polyethylene glycol 6000-simulated drought stress, Plant Biosystems -An International Journal Dealing with all Aspects of Plant Biology: Official Journal of the Societa Botanica Italiana, 148:1, 96-108, DOI: 10.1080/11263504.2013 To link to this article: http://dx.doi.org/10.1080/11263504.2013.878408 PLEASE SCROLL DOWN FOR ARTICLETaylor & Francis makes every effort to ensure the accuracy of all the information (the "Content") contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content.This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions Ethylene glycol tetra-acetic acid and salicylic acid improve anti-oxidative ability of maize seedling leaves under heavy-metal and polyethylene glycol 6000-simulated drought stress Abstract Stress caused by divalent heavy metal ions and drought exert many toxic and adverse effects on seedling growth and development of plants, especially on leave growth. Organic acids such as ethylene glycol tetra-acetic acid (EGTA) and salicylic acid (SA) have been shown to alleviate the unfavorable effects exerted by these stresses on seedling growth and metabolism. In order to reveal the physiological mechanism underlying these toxic effects and the alleviated effects exerted by organic acids, maize seedling leaves (genotype "Zhengdan958") were exposed for 7 days to different concentrations of cadmium (Cd 2þ ), mercury (Hg 2þ ), and lead (Pb 2þ ) ions and to the drought stress-inducing polymer polyethylene glycol (PEG) 6000. The same experiments were also carried out in the presence of EGTA or SA. Treated leaves were analyzed for activities of the anti-oxidative enzymes catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) and for the content of malondialdehyde (MDA). The results showed that stress treatments with the heavy metals Cd 2þ , Hg 2þ , and Pb 2þ and with PEG all affected the activities of CAT, POD, and SOD, alt...

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Impact of Handling Practices on the Quality of Bare-Root Plants: A Review

Goyette¹,

Piché²,

Brownbridge³

et al. 2014

Journal of Environmental Horticulture

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There is a need to develop methods that would allow plant health and survival potential to be quantified in real time, particularly in the different phases of bare-root handling. Such methods would allow the impact of different stresses experienced throughout storage and transport on establishment success and growth of the bare-root plant to be quantitatively defined. This review concentrates on the impact of pre-lifting, pre-transplanting and post-transplanting considerations and identifies tools that can be applied for monitoring plant quality. Root and shoot culturing, lifting and transplanting timing, water stress and storage/transport handling are all significant factors in the post-transplant performance of bare-root material. Different postharvest tools and indicators are also examined for their efficacy and contribution to plant quality. Chlorophyll fluorescence and root respiration are useful as indicators of water stress and dormancy; however, more practical equipment should be developed in both instances for greater adoption of these practices. Hydrophilic gel slurries can be used either during storage and immediately prior to transplant as an additional prevention of desiccation but will not restore vigor to damaged plants. Cold storage at optimum temperature should be adapted to maintain the target relative humidity; otherwise the storage period should not exceed 4 weeks for unprotected bare-root plants. Many improvements have been made in the ability to predict the effects of stresses experienced by bare-root material. However, more equipment, metrics, species and site specific research would enhance monitoring of bare-root quality.

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Stress resistance levels at the time of lifting affect post-planting performance ofQuercus roburseedlings

Cited by 3 publications

References 20 publications

The Co-Occurrence of Physiological and Epicotyl Physiological Dormancy in Three Desiccation-Sensitive Castanopsis (Fagaceae) Acorns from China with Specific Reference to the Embryonic Axis Position

The Co-Occurrence of Physiological and Epicotyl Physiological Dormancy in Three Desiccation-Sensitive Castanopsis (Fagaceae) Acorns from China with Specific Reference to the Embryonic Axis Position

Ethylene glycol tetra-acetic acid and salicylic acid improve anti-oxidative ability of maize seedling leaves under heavy-metal and polyethylene glycol 6000-simulated drought stress

Impact of Handling Practices on the Quality of Bare-Root Plants: A Review

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