Recovery after Chilling: An Assessment of Chill-Tolerance in<i>Phaseolus</i>spp.

Guye, Michael G.; Vı́gh, László; Wilson, John

doi:10.1093/jxb/38.4.691

Cited by 15 publications

(7 citation statements)

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“…Chilling significantly inhibited recovery of growth in both types of cultures (perlite or hydroponic) (Table 1), We can establish that the NAF component IS responsible for most of the negative effect of chilling on plant growth, whereas the rest of the growth related components (LAR and therefore SLA and LWR) do not change. According to Potvin (1986), as NAB represents net carbon uptake, the decrease should be related either to the reduction in photosynthesis or to an increase in respiration, Predrought treatment significantly reduced the negative effects of chilling on plant recovery, in both perlite and hydroponic conditions, as .NAR reached control values only in droughted plants (Table 1), Similar results were reported by Potvin (1986) and Wolfe (1991) in maize, Bruggemann et al (1992) have also found that drought-hardened plants of tomato grew faster than non-droughted plants during the recovery period, Necrotic leaf area is a good index for chilling injury and chilling sensitivity, Capell & DorfHing (1993) found a good correlation in maize plants between chilling sensitivity, necrotic leaf area, percentage of survival and membrane injury, measured as electrolytic leakage, Guye, Vigh & Wilson (1987) also related high percentage of leaf necrosis to low growth recovery. We observ'ed that pre-drought treatment significantly reduced the percentage of necrotic leaf area in both types of culture, which also correlates with the growth recovery showed above (Table 1), in agreement with the previous literature.…”

Section: Resultssupporting

confidence: 76%

Drought enhances chilling tolerance in a chilling‐sensitive maize (Zea mays) variety

1996

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SUMMARYWe investigated the effectiveness of pre-drought treatment to acclimate a chilling-sensitive varietv-of maize (Errazu) against chilling injury. We tested two nnethods of applying drought: (a) withholding water during 17 d in perlite culture, and (b) suppressing water b>' keeping plants out of the nutrient solution at time intervals (2, 4, 6, 8 and 10 h) on five successive days in hydroponic culture. Drought treatments were applied to maize seedlings either in perlite or hydroponic culture before chilling (5 d at 5 °C and ISO/ano\ rtT^ s'^ photosynthetic photon fluence rate and then 5 d of recovery at 25 °C). Both experiments were carried out under low irradiance to avoid photo-oxidation damage during chilling. Plant growth (relative growth rate, RGB; net assimilation rate, NAK; leaf atea ratio, LAR; specific leaf area, SLA; and leaf weight ratio, LWR), percentage of necrotic leaf area, leaf relative water content (KWC), leaf water ("f,,,,,) and osmotic (^^) potentials, specific plant transpiration, total water absorption and COo exchange rate (CEB) were examined in drought-treated and non-treated maize seedlings during chilling and after a 5 d recovery period. RGR and NAR of droughted maize seedlings were higher than those of nondroughted seedlings during recovery, irrespective of the growth medium (petlite or hydroponic). Chilling-induced leaf necrosis was significantly lower in droughted than in non-droughted seedlings. Droughted plants had higher water status (higher leaf RWC, T,,,^, and 'V^) after 5 d of chilling, mamly owing to stomatal closure induced by drought. The CER declined to a similar extent in droughted and non-droughted maize seedlings on chilling, but during recovery droughted seedlings showed significantly higher CO, fixation rate than non-droughted seedlings. Leaf conductance of water vapour ig) and CO, intercellular concentration (C,) analysis led to the conclusion that chilling-induced CER inhibition was not due to a stomatal limitation. Droughted seedlings of maize had a better water use efficiency of photosynthesis (wuEp^) than non-droughted plants. We conclude that pre-drought treatment hardened the chilling sensitive variety of maize Errazu against chilling injury.

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Section: Resultssupporting

confidence: 76%

Drought enhances chilling tolerance in a chilling‐sensitive maize (Zea mays) variety

1996

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“…One of the more noticeable effects of cold stress in maize seedlings is the appearance of leaf necrosis (Figure ). Cold temperatures can cause leaf tissue to wilt, and over the course of several days this wilted tissue can die, resulting in changes in leaf color from green to brown and texture from healthy leaves with high turgor to dehydrated, dead leaf tissue (Guye, Vigh, & Wilson, ). The Naive Bayes color‐based classification module that was trained and implemented within PlantCV classified each plant pixel into a healthy or necrotic category that enabled the quantification of necrosis as a percentage of area belonging to each category for every plant at each time point.…”

Section: Resultsmentioning

confidence: 99%

Section: Impact Of Cold Stress On Leaf Necrosis Across Genotypesmentioning

confidence: 99%

Classifying cold‐stress responses of inbred maize seedlings using RGB imaging

et al. 2019

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Increasing the tolerance of maize seedlings to low‐temperature episodes could mitigate the effects of increasing climate variability on yield. To aid progress toward this goal, we established a growth chamber‐based system for subjecting seedlings of 40 maize inbred genotypes to a defined, temporary cold stress while collecting digital profile images over a 9‐daytime course. Image analysis performed with Plant CV software quantified shoot height, shoot area, 14 other morphological traits, and necrosis identified by color analysis. Hierarchical clustering of changes in growth rates of morphological traits and quantification of leaf necrosis over two time intervals resulted in three clusters of genotypes, which are characterized by unique responses to cold stress. For any given genotype, the set of traits with similar growth rates is unique. However, the patterns among traits are different between genotypes. Cold sensitivity was not correlated with the latitude where the inbred varieties were released suggesting potential further improvement for this trait. This work will serve as the basis for future experiments investigating the genetic basis of recovery to cold stress in maize seedlings.

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“…One of the more noticeable effects of cold stress in maize seedlings is the appearance of leaf necrosis (Figure 5). Cold temperatures can cause leaf tissue to wilt, and over the course of several days this wilted tissue can die, resulting in changes in leaf color from green to brown and texture from healthy leaves with high turgor to dehydrated, dead leaf tissue (Guye et al, 1987). The Naive Bayes color-based classification module that was trained and implemented within PlantCV classified each plant pixel into a healthy or necrotic category that enabled the quantification of necrosis as a percentage of area belonging to each category for every plant at each time point.…”

Section: Resultsmentioning

confidence: 99%

Classifying cold stress responses of inbred maize seedlings using RGB imaging

Dennis

Oakland

Callen

et al. 2018

Preprint

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16Increasing the tolerance of maize seedlings to low temperature episodes could mitigate the 17 effects of increasing climate variability on yield. To aid progress toward this goal, we established 18 a growth chamber-based system for subjecting seedlings of 40 maize inbred genotypes to a 19 defined, temporary cold stress while collecting digital profile images over a 9-day time course. 20Image analysis performed with PlantCV software quantified shoot height, shoot area, 14 other 21 morphological traits, and necrosis identified by color analysis. Hierarchical clustering of changes 22in growth rates of morphological traits and quantification of leaf necrosis over two time intervals 23 resulted in three clusters of genotypes, which are characterized by unique responses to cold 24 stress. For any given genotype, the set of traits with similar growth rates is unique. However, the 25 patterns among traits are different between genotypes. Cold sensitivity was not correlated with 26 the latitude where the inbred varieties were released suggesting potential further improvement 27 for this trait. This work will serve as the basis for future experiments investigating the genetic 28 basis of recovery to cold stress in maize seedlings. 29

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Recovery after Chilling: An Assessment of Chill-Tolerance inPhaseolusspp.

Cited by 15 publications

References 0 publications

Drought enhances chilling tolerance in a chilling‐sensitive maize (Zea mays) variety

Drought enhances chilling tolerance in a chilling‐sensitive maize (Zea mays) variety

Classifying cold‐stress responses of inbred maize seedlings using RGB imaging

Classifying cold stress responses of inbred maize seedlings using RGB imaging

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