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Chilling tolerance in maize seedlings is correlated with chilling-induced ABA accumulation

100%

Janowiak F., Dorffling K.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

2

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Abscisic acid levels in maize seedlings under field conditions during cold periods in spring

84%

Janowiak F., Luck E., Dorffling K.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2002

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tom 481

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nr 1

Laboratory studies have showed higher ABA accumulation in seedlings of the chilling tolerant genotypes than in the sensitive ones during low temperature exposure. On the basis of these results the hypothesis was developed that chilling tolerance (CT) in maize is related to the ability for fast and pronounced formation and accumulation of ABA as a protective agent against chilling injury. Presented in the paper measurements of ABA levels in maize seedlings under complex field conditions during natural spring cold waves at two sites of Europe confirmed the results from growth rooms. The chilling tolerant maize lines accumulated under field conditions more ABA than the sensitive ones during spring cold periods. Moreover, the data from field conditions show that the ABA accumulation induced by low temperature is not directly related to chilling-induced water deficit.

3

Abscisic acid accumulation and extent of injury in twenty maize inbred lines under chilling conditions

84%

Janowiak F., Dorffling K.

Zeszyty Problemowe Postępów Nauk Rolniczych

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2002

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tom 481

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nr 1

The role of ABA in chilling tolerance (CT) of maize seedling has been reinvestigated using a set of new maize inbred lines with defined differences in CT. Under chilling conditions (4°C) the ABA level increased in all lines investigated. This increase was significantly higher in the chilling tolerant lines than in sensitive ones. Between ABA level and extent of chilling injury a significant relationship was observed. ABA level correlated negatively with percent necrotic injury (-0.604**) and positively with qP (0.606**). Thus, the study clearly indicates a relationship between the ABA accumulation under chilling stress and extent of injury in maize according to the hypothesis that CT in maize is related to the ability for the accumulation of ABA under chilling stress conditions.

4

Peroxidation of free fatty acids in thylakoids of chilling-sensitive and chilling-tolerant plants

67%

Garstka M., Zarnowiecka A., Kaniuga Z.

Acta Physiologiae Plantarum

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1994

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tom 16

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nr 4

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Effects of pH and detergents on galactolipase activity in chloroplast of chilling-sensitive and chilling-resistant plants

51%

Saczynska V., Miskiewicz E., Kaniuga Z.

Acta Physiologiae Plantarum

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1994

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tom 16

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nr 4

Ograniczanie wyników

2 Acta Physiologiae Plantarum

2 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Polish Journal of Natural Sciences. Supplement

3 Dorffling K.

3 Janowiak F.

2 Kaniuga Z.

1 Garstka M.

1 Luck E.

1 Miskiewicz E.

1 Saczynska V.

1 Zarnowiecka A.

1 2003

2 2002

2 1994

Chilling tolerance in maize seedlings is correlated with chilling-induced ABA accumulation

Abscisic acid levels in maize seedlings under field conditions during cold periods in spring

Abscisic acid accumulation and extent of injury in twenty maize inbred lines under chilling conditions

Peroxidation of free fatty acids in thylakoids of chilling-sensitive and chilling-tolerant plants

Effects of pH and detergents on galactolipase activity in chloroplast of chilling-sensitive and chilling-resistant plants